Double curly braces react. It is written directly within the JavaScript code.
Double curly braces react Is there a standard to when I should be using quotes vs braces? Feb 11, 2020 路 I’ve heard that non-breaking spaces can have unintended side effects in React, so use it with discretion. JavaScript in JSX with Curly Braces JSC lets you write HTML-like markup inside a JavaScript file, keeping rendering logic and content in the same place. This article explains the theory behind double curly brackets and provides examples of how to use them effectively in R Programming Language. Enforce or disallow spaces inside of curly braces in JSX attributes and expressions (react/jsx-curly-spacing) 馃敡 This rule is automatically fixable by the --fix CLI option. The term inside, interest, is a placeholder, sort of like the name and address in a form letter. I know I can use prettier to set my preference. If you're looking to find or share the latest and greatest tips, links, thoughts, and discussions on the world of front web development, this is the place to do it. Table(_, {"Style Number", ". Compile it Jan 31, 2021 路 When to use curly braces and when angle in React Asked 4 years, 3 months ago Modified 4 years, 3 months ago Viewed 461 times Nov 8, 2017 路 What is the difference between double curly braces and triple curly braces for Handlebars. It Thus, you have learnt that curly braces {} are used as a special syntax in React. Default syntax is curly brackets + return, but if you have just one expression you can leave the curly brackets out and the return is implied. One use case of that is to pass a CSS style object to the special style attribute in React: JavaScript BRACKETS: What Are The Differences? | Parentheses, Curly Brackets, Square Brackets Anna McDougall 3. Jan 28, 2018 路 I want to use escape characters in React application, couldn't found a way to use escape characters in react application. state. Apr 20, 2023 路 JavaScript : What is the purpose of double curly braces in React's JSX syntax? If you need more specific information, let me know by leaving a comment or starting a chat. Basic Usage Handlebars expressions are some contents enclosed by double curly braces . The outer set specifies that we are using a variable; since the return portion is written in JSX, our code won’t know that we are setting the attribute to a variable unless we use curly braces around it. How can I use double curly braces inside a class in HTML tag? Hi, I'm learning django and I'd like to give a button a "data-*" attribute, so I can pass it to Javascript. Nov 16, 2023 路 Conclusion In conclusion, inline styles in React offer a way to apply styles directly to HTML elements. Jan 22, 2021 路 React - difference between double curly brackets vs one curly bracket to enumerate properties Asked 4 years, 5 months ago Modified 2 years, 3 months ago Viewed 3k times Jul 27, 2025 路 The Single Curly Braces are used for the directives in AngularJS, which are mainly the instructions to the framework to perform the specific actions in the HTML document. Mar 10, 2024 路 Double curly braces With Inline styling, double curly braces { { … }} are essentially used to interpolate the dynamic JavaScript object into the JSX code. js: Example 1: Filename: index. That’s because curly braces let you work with JavaScript right there in your markup! Using curly braces: A window into the JavaScript world JSX is a special way of writing JavaScript. {“braces or curly braces”} Braces are used to group statements and declarations. Because JSX allows you to use curly braces to embed expressions, you can also do the following to make the elements dynamic. Table(_, {{"Style Number", ". However, multiple Stateless, or Pure, Components are allowed per file. Such as adding two numbers determining if two conditions are true, taking a substring, etc. lastNa Feb 3, 2024 路 In React, curly braces are like the secret sauce that lets you inject JavaScript expressions into your JSX. What is the reasoning behind adding spaces in curly brackets const { var1, var2 } = props, but not square brackets const [foo, setFoo] = useState('bar'). tsx files, WebStorm has a nice feature that automatically adds braces or quotations after JSX attributes. Jul 9, 2020 路 Interpolation in React Angular: use double curly braces { { name }} for element content. { key: value } implies a javascript object. When we want to add dynamic content to our HTML-like markup inside a JavaScript file we use curly braces. Start using curly-bracket-parser in your project by running `npm i curly-bracket-parser`. Aug 2, 2019 路 From React docs: You can put any valid JavaScript expression inside the curly braces in JSX. html app. I've noticed that when typing = after certain declaration curly brackets instantly come up, when most of the time the paramete Aug 15, 2021 路 “curly brackets expanding the arrow callback one line to multiline where you need to use return statement to get back any value. A JavaScript expression can be a variable, function, an object, or any code that resolves into a value. _input: Oct 19, 2020 路 JSX uses double curly braces {{ }} to surround styling properies and values, in HTML it’s double quotes " ". Directives Vue provides a set of built-in directives prefixed with v- that allow DOM manipulation inside the template in response to model changes. Current syntax May 27, 2019 路 Problem: One of the script syntax in algolia is using double curly bracket as a text to access the actual variable value. Use double braces or square brackets for attributes. May 11, 2017 路 I guess you are confused about the double curly braces. Rule Details This rule aims to maintain consistency around the spacing inside of JSX attributes and expressions inside element children. Therefore, to pass a JS object in JSX, you must wrap the object in another pair of curly braces: person={{ name: "Hedy Lamarr", inventions: 5 }}. In the JavaScript file: Get this template using document. Mar 28, 2015 路 To make this possible, I changed the delimiters with the Delims function from the text/template library and replaced all hardcoded double curly braces in the source code. Just seems inconsistent. There are multiple ways to do it but here we will show you only two useful methods to achieve it. It’s a common question for beginners, and the answer is simple:The first I try to understand the logic behind conventions. The expression can be a variable, a function, an object, an arithmetic calculation, logical evaluation, or any code snippet that returns some value. May 25, 2021 路 For . addWidget( Aug 18, 2017 路 Sometimes we use a JavaScript object inside curly braces, which makes it look like double curly braces, but it’s really just an object inside curly braces. The difference is named exports allow for aliasing the package. The below examples demonstrate declarative rendering in Vue. . Example: In this example, ES6 template literals inside JSX allow dynamic access to props by wrapping the props. It either requires or disallows spaces between those braces and the values inside of them. There are 2 other projects in the npm registry using curly-bracket-parser. jsx or . g. style-number > SPAN:nth-child(1):nth-last-child(1)"}) fails but this one works: Html. Let's walk through the new React docs and take Trying out Svelte and on:click event. so you know that the curly braces in JSX means process the inner value in JavaScript, so the outer braces is used exactly for this purpose. Apr 1, 2024 路 Photo by Jeswin Thomas on Unsplash Do you ever get confused by Prompt Templates in LangChain? What do the curly brackets do? How do you pass in the variables to get the final string? How do multi Mar 15, 2018 路 Curly braces declaring a variable in React Asked 7 years, 8 months ago Modified 1 year, 8 months ago Viewed 7k times Jul 12, 2023 路 6 Likes Topic Replies Views Activity Convert stringified double curly braces into variable Questions set-variable 1 46 April 11, 2025 Make SDK - escape double brace { {}} Questions custom-apps 9 1248 September 8, 2023 Closing brackets to insert item –> }} Questions 3 349 September 7, 2023 Use curly brackets in the string of the body of a HTTP request/custom app Questions custom-apps , api Sep 3, 2021 路 This issue is to consider enabling the rule for react/jsx-curly-brace-presence in our eslint config. Dec 23, 2016 路 The Vue syntax allows us to have one expression inside the double curly braces. So you need one pair to inject the variable. { . So that’s how I discovered curly brackets in regex (or curly braces for Jun 24, 2016 路 you should refer to this 4 as [“brackets or square brackets”] Brackets are used to index into an array. Just wondering why this became convention. (“parentheses”) Parentheses are used for two purposes: (1) to control the order of operations in an expression, and (2) to supply parameters to a constructor or method. createElement unless you’re initializing the app from a file that is not JSX. Jun 5, 2024 路 Answer by Brodie Velazquez In react, since - { } - can be used to inject variables, double curly braces - { { }} - are used to inject javascript objects within your JSX. That's the purpose for the inner ones. Aug 17, 2021 路 React curly braces inside quotes to ads className Asked 4 years, 3 months ago Modified 4 years, 3 months ago Viewed 1k times Oct 4, 2017 路 Curly braces signify the export type, which is a named export. Mar 8, 2024 路 The curly braces as the last character of the first line and the matching closing brace as the second to last character of the statement are the ones in question. But it is a shame that I don't know what they are called. Aug 5, 2024 路 Learn to use curly braces in React to create dynamic UIs. Mar 20, 2022 路 You need to wrap it with double curly braces {{ }} to print the literal curl-brace characters in a python string. 6 days ago 路 This error occurs when React’s transpiler (Babel) encounters a prop value that isn’t formatted correctly—usually because it’s missing quotes (for text) or curly braces (for JavaScript expressions). I’ve yet to experience any issues myself. js There are 3 main ways to add whitespace between your JSX elements in React. } evaluates to an expression in JSX. How would you go about ONLY capturing what is inside the curly brackets? Apr 19, 2018 路 Why in the start snippet below, the const user are wrapped in curly braces and the const element are wrapped in parentheses? function formatName(user) { return user. It does not capture everything between the curly brackets, it captures everything between the curly brackets AND the curly brackets themselves. Two ways to add comments in React Native // (double forward slash) is used to comment only a single line in React Native code, but it can only be used outside of the render block. In the below template, firstname is a variable that is enclosed by double curly braces, which is said to be an expression. image in backticks and curly braces within the src attribute. Feb 23, 2020 路 React Native error on double curly braces, ESLint/Prettier Warnings Asked 5 years ago Modified 3 years, 10 months ago Viewed 2k times However, do note that they do not enjoy the same level of compile-time optimizations as templates. Apr 30, 2023 路 JSX lets you write HTML-like markup inside a JavaScript file, keeping rendering logic and content in the same place. Use one or more (non-breaking space) character sequences. Jan 22, 2024 路 Why Curly Brackets Are Used In JavaScript, React and Node js? 馃殌 You might have seen some imports in React to use curly braces { }, like import {App} from ". import React , {Component} from 'react' Note that there is curly braces in the import statement. To get a link for the latest Handlebars version, visit this link. Add space with curly braces + quotes You can also add spacing in JSX by using double or single quotes inside curly braces {" "}, or {' '}, like this: Nov 27, 2022 路 bomzj commented on Nov 27, 2022 What problem does this feature solve? Let's improve template syntax by using single curly braces like in Svelte/React instead of the "Mustache" syntax (double curly braces). Double curly braces in React's JSX syntax? Curly braces has got 2 usage here:- A. This will break Oct 3, 2024 路 Approach 2: Using ES6 Literals Use template literals inside curly braces to embed props dynamically within a string, enabling more flexible combinations of static and dynamic content. For situations where JSX expressions are unnecessary, please refer to the React doc and this page about JSX gotchas. May 23, 2017 路 I've noticed that I can escape curly braces. B. Notice that the "double curly braces" represent a javascript object being created inside of JSX, and also that the css attributes are camel cased. Theory Behind { {}} in dplyr The { {}} operator is known as the curly-curly operator or double curly brackets. Feb 6, 2023 路 On the left side of the assignment operator, there is a pattern of variables in which the properties of an object are to be stored. We’ll break down their purpose, explore real-world examples, and clarify when to use them versus single braces. firstName + ' ' + user. Note: Curly brackets ' { }' are used to destructure the JavaScript Object properties You see, in the metaNavLinks property array, around every link object are two curly braces instead of one. It is used to evaluate a JavaScript expression during compilation. But import Link from 'react-router-dom'; does not work. Since all attributes accept either string literals expressions in curly braces, this would hel jsx-curly-spacing Enforce or disallow spaces inside of curly braces in JSX attributes and expressions. The Double Curly Braces in React Explained Objects are also denoted with curly braces, like { name: "Hedy Lamarr", inventions: 5 }. So in this article, we will deeply understand the concepts of this double and single curly brace with their implementation and core differences. Dec 2, 2019 路 The double curly braces: { } are used everywhere in react code. style-number > SPAN:nth-child(1):nth-last-child(1)"}}) (The second one has double curly brackets while the first has only Jul 7, 2020 路 Ideally there would be a syntax to either escape double curly braces when “skip rendering of request body” is not checked, or to input an environment variable in body when “skip rendering of request body” is checked. This article aims to explore the Jun 23, 2021 路 Cannot display double curly braces in react useTranslation () Asked 4 years, 5 months ago Modified 4 years, 4 months ago Viewed 2k times Dec 18, 2019 路 This syntax can be confusing at first sight: why the double curly braces!? Fret not: the outer set allow us to interpolate JavaScript into React’s JSX syntax; and the inner curlies are the JS Nov 2, 2022 路 Needless to say, this is not valid JavaScript, but it is JSX code. They’re the bridge between your logic and your markup. ” But Reaz, just for check, your last explanation is about this syntax. If you want to comment on something in JSX you need to use JavaScript comments inside of curly braces like {/* Comment Mar 27, 2018 路 I saw in the video that we use import React from 'react'; And similarly when we're importing Components into other files, that works the same way. When do you use parenthesis? Parenthesis are used to group multiline of Jun 27, 2019 路 To answer that question, it would be easier to explain when you don't need a curly brace 3 Tagged with react, syntax, javascript, flatiron. It has to be import { Link } from 'react-router-dom'; Why is that? At first I thought {} were to put multiple imports at once like we did previously. I am having problems displaying { and } as text in React. Server code is responsible for computing values and using them to replace the dynamic double-curly bracket template variables. The curly brace method actually defers evaluation of the argument, so it is not just less typing (no quotes), but also that it supports arbitrary expressions. This prevents you from having to have variables everywhere when their only purpose is to handle the results of those calculations. Feb 22, 2020 路 Hi, I'm writing a React app in WebStorm, and am a novice at the topic. Double curly braces are used as placeholders to interpolate the required data in the DOM. How would I render this correctly? (just a snippet). I'm sure it isn't the best way to achieve what I have in mind, but, as I said, I'm still learning and exploring the options. firstName, or formatName(user) are all valid JavaScript expressions. Jan 30, 2024 路 React Element Styles Applying inline styles in JSX involves using double curly braces instead of double quotes. May 25, 2017 路 In react, the syntax of props usage again with curly braces but this is used to provide dynamic binding for your components. What are the curly braces in {restProps} representing? Aug 12, 2017 路 @bacongobbler Hello Matthew, I've been fighting with how to escape curly braces in a Helm template in markdown. Use CSS to set margins or padding. getElementById(). By being aware of the differences between traditional CSS and React inline styles, and by avoiding common mistakes, you can effectively leverage this method of styling in your React projects. This is the opposite case of this question where they want to not see curly braces used for binding when the page is Aug 29, 2016 路 just to expand @mike's comment, you need double curly braces because one is for React to enter is JS mode and one is to denote the new object. Always use JSX syntax. JSX curly can convert a JavaScript number, string into a string. My interpretation of the double curly brackets is that the style object only accepts a JavaScript object, so the object has to be inside of single curly brackets. What is the difference between curly brackets and parentheses? In set theory, chevrons or parentheses are used to denote Nov 21, 2023 路 Here's a quick guide on when to use double curly brackets ("double curlies") in your Retool apps. The double curly braces are necessary for embedding a JavaScript object in JSX. js is a logic-less template system that allows for easy rendering of dynamic content. For example, 2 + 2, user. For situations where JSX expressions are unnecessary, please refer to the React doc and this page about JSX Dec 23, 2021 路 Today we will show you how to render curly braces as plain text in React/JSX. May 30, 2023 路 When using inline styling in React, we enclose them in double curly braces. Mustache. For example, {1+1}, you can execute something like this and the result of this expression will be output on the screen. The curly braces are a special syntax to let the JSX parser know that it needs to interpret the contents in between them as JavaScript instead of a string. It is commonly used in front-end development to separate the presentation layer from the business logic, making it easier to maintain and update the user interface. This is different from default exports, the other type. There are two types of exports in ES6: Default Export: export default App; //example of default Note If double curly braces after person= confuse you, recall they’re merely an object inside the JSX curlies. Creating and executing a simple template Declare a template in the HTML file. Also, here is an example of how you’d use multiple inline CSS styles on the same JSX tag: And to return an object, which is marked by curly braces, you have a conflicting syntax. Apr 7, 2024 路 Using margin or padding to add whitespace between JSX elements # How to add whitespace between JSX elements in React. const a = {a: 1} <Component value={a} /> Here a is object if you embed the object <Component value={{a: 1}} /> Same way style is an object need to be passed to the React element. Now you can read these props inside the Avatar component. But without them I get this: 45:12-16 Basic Rules Only include one React component per file. Aug 2, 2023 路 Obsidian renders curly brackets and the content therein even in reading mode, what makes document containing additional formatting information for pandoc not very nice to read. I think it should be without curly braces like below import React , Component from 'react' Can you please comment on this ? Why is there a curly brace in the import statement? This is very confusing. With concurrent rendering, you can mark state updates as non-urgent in order to improve the performance of your user interface. , Diagnose Listing 3-6: Object literals in JSX result in double curly braces Listing 3-7: Enclose comments in curly braces Listing 3-8: Using Element Variables Listing 3-9: Conditional Rendering with Element Variables Listing 3-10: Conditional Rendering with && Listing 3-11: Using the conditional operator Listing 3-12: Using an arrow function as an event Aug 6, 2020 路 The slash-asterisk sandwich /* */ isn’t the only Javascript comment syntax we can use in our React app. Handlebars expressions are put into double curly braces {{expr}} for HTML-escaped content; otherwise, use triple curly brackets {{{expr}}} to avoid HTML-escaping. This could be set up to catch two formatting/code style issues, e. However, because hubL is using double curly bracket as variable, it is trying to process that curly bracket in hubL way, which resulting in ignoring it/outputing empty value. While giving inline styles in JSX, it has to be specified as an object so it has to be inside curly braces again. Jan 31, 2025 路 馃敆 Key Takeaways: The Context API is a powerful tool for managing global state in React. Jul 23, 2025 路 The use of double curly brackets { {}} is a feature introduced with the tidy evaluation and makes it easier to program with dplyr package. It's like our window into JavaScript land. VScode offers autocomplete on:click but it writes doble quotes instead of curly braces… Oct 24, 2024 路 If double curly braces are a frequent source of problems, consider alternative mechanisms. 5, last published: a year ago. you can do this with curly braces but not with get (): That’s because curly braces let you work with JavaScript right there in your markup! Using curly braces: A window into the JavaScript world JSX is a special way of writing JavaScript. Do not use React. Curly Braces with Double Slash We can also use the Javascript single line comment syntax that starts with a double slash //. I've tried raw/endraw, pre, single backslash, double backslash - No success! thanks for any suggestionI'm trying to put this in code block with either indents or backticks. Nov 12, 2024 路 Why do we need two sets of curly braces? In this blog, we'll explore why these double curly braces exist and how to use them correctly. Over a year ago Doesn't answer the question, OP wanted to escape curly braces. Learn the best practices for JSX syntax and how to avoid common pitfalls in this expert guide. Sometimes you will want to add a little Jul 23, 2025 路 Declarative rendering in Vue enables us to render data to the DOM using straightforward template syntax. Simple parser to replace variables inside templates/strings and files for node js and browser. component. html Jun 1, 2013 路 I want the user to see double curly braces, but Angular binds them automatically. But the style property accepts an object. It's on by default too. Let's have a look at this concept from the following example. The contents of a class or JSON syntax is derived from JavaScript object notation syntax: Data is in name/value pairs Data is separated by commas Curly braces hold objects Square brackets hold arrays. In this situation, you can use curly braces in your JSX to open a window to JavaScript. Particularly i'm trying to understand why this statement: Html. This can’t include control flows or multiple expressions. Nov 13, 2025 路 In this blog, we’ll demystify double curly braces in React JSX. That means it’s possible to use JavaScript inside it—with curly braces { }. That is, if I type \{, I get {. Nov 16, 2017 路 using multiple curly braces in React Asked 7 years, 3 months ago Modified 7 years, 3 months ago Viewed 3k times If the rule is set to enforce curly braces and the strings have quotes, it will be fixed with double quotes for JSX children and the normal way for JSX attributes. We can also generate a random number with the built-in math object, Feb 11, 2020 路 Would someone be able to explain the correct usage of brackets in M. Jul 26, 2020 路 Why do you need two curly braces? First curly braces are special syntax in JSX. I saw a similar question that someone said to wrap the entire string in curlies, but this is not working: let queries_block = this. And an object also needs another pair of curly braces to wrap it up. I'd recommend using the Discord for quick questions as you'll receive a much quicker reply. With interpolation, you can put your code directly into the web page using double curly braces shown in the following example: Example: app. E. Is it a printing mistake ? This looks odd syntax. For example const inputValue = "Hello" <input value={inputValue} /> The second pair is for the javascript's object const style = { color: "#fff" } The style attribute in React requires an object (unlike in HTML a CSS string). Styles are expressed not as plain strings, but as properties within objects: Jul 23, 2025 路 The ES6 module can be imported with or without curly braces, making it essential to understand the scenarios in which curly braces should be used. Curly braces { } are special syntax in JSX. Text Interpolation The most basic form of data binding is text interpolation using the "Mustache" syntax (double curly braces): Mar 10, 2019 路 What does double curly braces mean in Python? The double curly brackets are not HTML but scripting code. fontSize or textTransform. Mar 7, 2016 路 What does $ {} (dollar sign and curly braces) mean in a string in JavaScript? Asked 9 years, 8 months ago Modified 1 year, 11 months ago Viewed 424k times Nov 12, 2025 路 Template literals are enclosed by backtick (`) characters instead of double or single quotes. Jun 21, 2017 路 It's just a notation for where a variable value should be substituted. you can Mar 27, 2018 路 In the beginning of your career when learning React and ES6 JavaScript syntax, it can be confusing when to use curly braces { } and when to use parenthesis ( ) Jan 2, 2020 路 Why do we use double curly braces in react? React uses JSX, In JSX for evaluation of any variable, state object , expression etc has to be enclosed in {}. To get around it, you can evaluate the object with parentheses, as seen in createPerson() above. If you want to comment in a render block where we use JSX, you need to use the second method. The biggest change in React 18 is the addition of concurrent rendering. Imagine you want to show a name on your site. Using components and React-like frameworks can lead to more manageable and encapsulated code. To pass props, to render state variables and so on. It makes managing shared state between components much more efficient. You have shown how to use them in template literals. JSX uses camelCase syntax for property names (if they have more than one word), e. eslint: react/no-multi-comp. Jun 21, 2023 路 JavaScript’s template literals and React’s curly braces {} are powerful tools for including dynamic content within strings and JSX code, respectively. 0 Lets say you are passing a prop to react component. Maybe I'm not understanding your solution. And to embed this object in JSX you need curly braces, hence, { {width: 193} } Note: To embed any kind of Javascript expression/variable/object in JSX you need curly braces. The variable's name must be the same as defined in the object. Jun 1, 2021 路 Is there a way to override Postman’s default variable substitution if the field has double curly braces in it, such as when submitting a mustache template which also uses double curly braces. Sometimes you will want to add a little JavaScript logic or reference a dynamic property inside that markup. Sep 29, 2021 路 I'm currently learning React Native and wondering why some props have values in quotes "" and some have their values in curly braces {}. Options There are two main options for the rule: {"when": "always Mar 26, 2018 路 In the beginning of your career when learning React and ES6 JavaScript syntax, it can be confusing when to use curly braces { } and when to use parenthesis ( ). Sep 26, 2025 路 馃搶 In this video, I explain why we use double curly braces { {}} in React inline CSS. Sep 13, 2016 路 With curly brackets (from React's docs), accessible through this. Rule Details By default, this rule will check for and warn about unnecessary curly braces in both JSX props and Mar 15, 2022 路 Opening and closing curly braces are also used to define an object, so if you take a look at the simple definition of inline styles in React, it looks like double curly braces: That’s because curly braces let you work with JavaScript right there in your markup! Using curly braces: A window into the JavaScript world JSX is a special way of writing JavaScript. This rule allows you to enforce curly braces or disallow unnecessary curly braces in JSX props and/or children. Here, you see an HTML tag is assigned to a JavaScript variable. It is written directly within the JavaScript code. 3. This can be used to evaluate a JavaScript expression during compilation. <Component value={"somevalue"} /> Here the value is string but you still need curly braces as the format. By using this syntax, your component will be able to update your html, if the value of your prop is changed. how can I render curly bracket {} in my component? I mean a pair of {} is exactly what I want to show on the webpage, how can I do that? Adding quote doesn't help. It works both for HTML text and HTML attribute. The double braces are important, as each set of curly braces does something different. Along with having normal strings, template literals can also contain other parts called placeholders, which are embedded expressions delimited by a dollar sign and curly braces: ${expression}. By clarifying when curly braces are necessary for importing ES6 modules, developers can ensure their code is written efficiently and with accuracy. /r/frontend is a subreddit for front end web developers who want to move the web forward or want to learn how. Step 2: Read props inside the child component You can read these props by listing their names person, size separated by the commas inside ({ and }) directly after function Avatar. Somebody help. Why are curly braces special characters; what Markdown syntax uses them? I couldn't find anything about it in the editing-help page. Hence, the double curly braces. If you still want use one line return then the return statement have to be ommited and curly brackets have to be covered by parentheses. You may see this with inline CSS styles in JSX. We have to be a bit careful using this syntax, because it has the power to comment out the closing curly brace } that ends our Javascript expression. ts Bringing It to Life: One-Way Data Binding in Action Alright, let's make this more tangible with a real-world example. While formatting preferences are very personal, a number of style guides require or disallow spaces between curly braces. Please share if anyone knows? TIA Oct 22, 2017 路 Curly braces in react native Asked 7 years, 6 months ago Modified 7 years, 6 months ago Viewed 1k times Mar 1, 2023 路 How to use curly brackets with regular expressions Last updated: March 1st, 2023 I was cleaning up a bad TSV the other day, and for some reason I needed a regular expression to select only 2 whitespaces. js Asked 8 years ago Modified 4 years, 9 months ago Viewed 22k times 馃敡 This rule is automatically fixable by the --fix CLI option. Jun 8, 2022 路 That's a feature of javascript arrow functions, not react specifically. Second one is a JSON object which represents the styling properties. Algolia script usage example: search. My problem was that the usual backslash syntax that I’m used to (\s) will select whitespace, tabs and line breaks. Jan 14, 2024 路 JSX curly braces can be used either between an opening HTML tag and closing HTML tag or after an HTML attribute. /App But why? To understand that, we … Mar 14, 2023 路 The solution is to use double curly braces, {{}}, as shown by @batmanscode. Jan 9, 2017 路 Double curly braces error with ReactDOM Asked 8 years, 2 months ago Modified 8 years, 2 months ago Viewed 183 times I'm no expert as to why but the syntax with braces around props being sent in allows you to calculate something before it goes into the component. js: Use the curly braces, space {' '} syntax. And the special thing about these curly braces inside of your JSX code snippets is that, in these curly braces, you can run basic JavaScript expressions. Disallow unnecessary JSX expressions when literals alone are sufficient or enforce JSX expressions on literals in JSX children or attributes (react/jsx-curly-brace-presence) This rule allows you to enforce curly braces or disallow unnecessary curly braces in JSX props and/or children. 12K subscribers Subscribed S. ,Curly braces { } are special syntax in JSX. They could have picked anything, but double brackets are both reasonably concise yet very unlikely to be found in HTML code otherwise. Aug 19, 2025 路 Use Case of curly braces Dynamic content: Curly braces are essential for inserting dynamic values into your JSX elements, making React components more interactive and data-driven. Latest version: 1. We would like to show you a description here but the site won’t allow us. Are you ok ? const getMousePosition = (x, y) => {return jsx-curly-brace-presence Disallow unnecessary JSX expressions when literals alone are sufficient or enforce JSX expressions on literals in JSX children or attributes. zlovyavcbaguihrnzeigvhodreitqitdaqyqbropsxkwbnrbqzwncyrxfdxegsptbioicxwvcndcazikxryqblfiwgtnao