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useRef is the hook to create refs in functional components, but you can also use refs in your class components! The way you do it is by using the createRef function. The usage is very similar to useRef: import { Component, createRef } from‘react’; class YourComponent extends Component...
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To understand how to use this technology, I wrote an article called ‘How To Use ReactJS’. You will read about the basic concepts of the library, which will give you an idea of the functionality and use. Let’s start from the beginning. ReactJS gives the developer a template language ...
// Inserted by a compiler (don't import it yourself!)import{jsxas_jsx}from'react/jsx-runtime';functionApp(){return_jsx('h1',{children:'Welcome to Kinsta!'});} This means you no longer need to import React into your components to use JSX. If you keep getting this error even after...
To check if a string is empty or not, we can use the built-in empty() function in PHP. The empty() function returns true if a string is empty; otherwise it returns false. Here is an example: $myString = ""; if (empty($myString)) { echo "string is empty"; }else{ echo "str...
log("Hello Admin"); } // 'Hello User' hets printed in the console because one condition ( username = ‘user’) passed. Hence the logical ‘||’ evaluates to true. JavaScript There are many instances in React where you may use the logical operators, ranging from conditional rendering of ...
In my last two articles, “Using Ajax and REST APIs in .NET 5” and "Build a CRUD Page Using JavaScript and the XMLHttpRequest Object", I introduced you to using the XMLHttpRequest object to make Web API calls to a .NET 5 Web server. Whether you use jQuery, Angular, React, Vue,...
freeze can be used to imitate their functionality. This is because TypeScript treats enums as if they were real objects at runtime, even non-const enums. We can use this construct as shown in the example below: const directionEnum = Object.freeze({ UP : "UP", DOWN: "DOWN" }); ...
Your development environment should have Node.js installed because we're going to use npm or yarn for handling our packages. This requirement is a given since you're working with React, but no harm in making sure, right? # Check if Node is installed node --version # Check if npm is in...