ReactDOM.render( This expression returns any boolean value and execution of the html code are depends on the success of it, it fails or simply the condition is false then the html code will not be displayed. JSX converts HTML tags into react elements. PHP | Ternary Operator the JavaScript must be wrapped with curly braces, {}. So if you like to write two paragraphs, you must put them inside a if (isAccessed) { However, Python provides the two methods that help us to take multiple values or input in one line. If the prop is passed, we're setting it to the passed value otherwise an empty string (''). Spread operator allows an iterable to expand in places where 0+ arguments are expected. When we create a new ReactJs app using the create-react-app command the App.js file looks like this // App.js import React from 'react'; import logo from './logo.svg'; import You can use curly braces inside JSX and write valid JavaScript expressions between them, including a ternary operator. a ? In this screen, we can see the message as the array length was greater than 0 to show the message is also visible . So it can be expressed in form of if-else statement. In case if we want to run the examples then we can create an html file and we can place the react code in javascript and html code in html and css code and we can get the output the same as the screens. Advantages of Ternary Operator: Following are some advantages of ternary operator: The use of the ternary operator will make the code shorter in comparison to the IF ELSE statement. In the syntax, if condition1 is incorrect then Expression3 will be executed else if condition1 is correct then the output depends on the condition2. background: black; color: red; React } By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, Explore 1000+ varieties of Mock tests View more, Black Friday Offer - React JS Redux Training (1 Course, 5 Projects) Learn More, 600+ Online Courses | 50+ projects | 3000+ Hours | Verifiable Certificates | Lifetime Access, React JS Redux Training (1 Course, 5 Projects), Software Development Course - All in One Bundle. function MsgBox(props) { It can be used to replace multiple lines of code with a single line, and is most often used to replace simple if else statements: In simple words, operators are used to perform operations on variables or values. According to the official documentation, it is a way to assign to variables within an expression using the notation NAME := expr. this.setState({isAccessed: true});