Following is the code to remove a child node in HTML using JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 20px;       font-weight: 500;    } Removing a child node in HTML using JavaScript Cow Lion Tiger Buffalo CLICK HERE Click the above button to remove the first list element from the above list    let resEle = document.querySelector(".result");    let animalList = document.querySelector(".animal");    document.querySelector(".Btn").addEventListener("click", () => {       animalList.removeChild(animalList.childNodes[0]);       animalList = animalList;    }); OutputThe above code will produce the following output −On clicking the ‘CLICK HERE’ button −

Following is the code to load a JavaScript file dynamically −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 20px;       font-weight: 500;    } Load a JavaScript file Dynamically CLICK HERE Click the above button to load external JavaScript    let resEle = document.querySelector(".result");    document.querySelector(".Btn").addEventListener("click", () => {       var jsRef = document.createElement("script");       jsRef.setAttribute("src", "sample.js");       document.getElementsByTagName("head")[0].appendChild(jsRef);    }); script.jsresEle.innerHTML='JavaScript has been loaded';OutputThe above code will produce the following output −On clicking the ‘CLICK HERE’ button −

Following is the code for using named arguments in JavaScript functions −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample, .result {       font-size: 18px;       font-weight: 500;       color: red;    }    .result {       color: rebeccapurple;    } Named arguments in JavaScript functions CLICK HERE Click on the above button to call a function and pass above object to it as argument    let sampleEle ... Read More

When working with JavaScript, handling keyboard events and creating a program that gets a variable to count up/down on keyboard press can be an essential skill. Keyboard events such as keydown and keyup in JavaScript are actions that occur when a user interacts with the keyboard. This article explains how to create a JavaScript program that increments or decrements a variable based on specific keyboard key presses. This feature can be helpful in interactive websites, like games or tools that check user input. Table of Content You can create a JavaScript program to get a variable to count up ... Read More

The JavaScript switch statement can contain return statements if it is present inside a function. The function will return the value in the switch statement and the code after the switch statement will not be executed.Following is the code to have return statements in JavaScript switch statement −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 20px;       font-weight: 500;    } Return statement in JavaScript switch Enter day 1-7 CHECK ... Read More

Following is the code to group array of objects by id in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: rebeccapurple;    } group the array of objects by Id in JavaScript { name: 'Rohan', age: 18 }, { name: 'Mohan', age: 20 }, { name: 'Shawn', age: 18 }, { name: 'Michael', age: 18 }, { name: 'David', age: 20 } ... Read More

Following is the code for disabling mouse event on certain elements using JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: rebeccapurple;    }    .size {       font-size: 30px;    } Disable Mouse events using JavaScript This is some text inside a div DISABLE ENABLE Click on the above button to enable or disable mouse events    let resEle ... Read More

In this article, we will learn to access browsing history using Javascript. In web development, accessing a user’s browsing history can improve user experience and provide personalized content. However, due to privacy concerns and security reasons, modern web browsers limit the amount of browsing history accessible via JavaScript.  What is Browsing History? Browsing history refers to the list of web pages that a user has visited over a while. Browsers typically store this data locally, allowing users to navigate back and forth through the pages they’ve visited. The window.history Object In JavaScript, the window.history object allows interaction with the browser’s ... Read More

JavaScript doesn’t support Enums out of the box. The only way to have enums in javaScript is to implement them using objects.Following is the code showing enumerated types in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: rebeccapurple;    } Enumerated Types in JavaScript CLICK HERE Click on the above button to get the color values    let resEle = document.querySelector(".result");   ... Read More

Following is the code to embed JavaScript in html file −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: rebeccapurple;    } Embed javascript in html file    let resEle = document.querySelector(".result");    resEle.innerHTML += "Inline javaScript loaded" + ""; script.jsresEle.innerHTML += 'External JavaScript loaded ';OutputThe above code will produce the following output −