10 Things You Should Know About JSX

10 Things You Should Know About JSX

JSX is a Markup language that looks similar to HTML but actually is a syntax extension for JavaScript. It’s easier to write code instead of pure Javascript. It allows developers to use HTML syntax to compose JavaScript components. Since it is a javascript extension, so the browser will not understands it unless you use a JSX compiler such as Babel. JSX used in order to create React elements. It provides syntactic sugar for the React.createElement(component, props, …children) function. 10 Things You Should Know About JSX

JSX is a Markup language that looks similar to HTML but actually is a syntax extension for JavaScript. It’s easier to write code instead of pure Javascript. It allows developers to use HTML syntax to compose JavaScript components. Since it is a javascript extension, so the browser will not understands it unless you use a JSX compiler such as Babel. JSX used in order to create React elements. It provides syntactic sugar for the React.createElement(component, props, …children) function.

JSX as variables

JSX elements can act as values for identifiers. The following example shows how to declare a variable with a JSX element as the value.

const javascript = <h1 className = "heading"> Hello Javascript </h1>

Behind the Scenes

How does JSX work behind the scenes?

JSX code:

const javascript = <h1 className = "heading"> Hello Javascript </h1>

Compiles into:

const javascript = React.createElement {
       type: "h1",
       props: {
           className: "heading",  
           children: "Hello Javascript",
          };
    };

Here we can clearly see that JSX compiles into a regular javascript object.

react react-jsx jsx javascript

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