Following is the code passing empty parameter to a method in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: blueviolet;    } Passing empty parameter to a method Click here Click on the above button to call multiply function and pass empty parameters to it    let resEle = document.querySelector(".result");    let BtnEle = document.querySelector(".Btn");    function multiply(a = 2, b = 4) {       return a * b;    }    BtnEle.addEventListener("click", () => {       resEle.innerHTML = "The multiplication of numbers = " + multiply();    }); OutputOn clicking the ‘Click here’ button −

The call(), apply() and bind() are used to borrow methods in JavaScript.Following is the code for borrowing methods in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result, .sample {       font-size: 18px;       font-weight: 500;       color: rebeccapurple;    }    .result {       color: red;    } Borrowing a method in JavaScript CLICK HERE Click on the above button to borrow the welcome method of object obj ... Read More

The object.is() method introduced in ES6 as a way to compare two values. These two values can either be primitives or objects. It does a little better comparison than == and ===.Following is the code for object.is() in equality comparison −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: blueviolet;    } Object.is() equality comparsion Click here Click on the above button to compare objects ... Read More

Event Bubbling − Whenever an event happens on an element, the event handlers will first run on it and then on its parent and finally all the way up to its other ancestors.Event Capturing − It is the reverse of the event bubbling and here the event starts from the parent element and then to its child element.Following is the code for event bubbling vs event capturing in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px; ... Read More

The JavaScript undefined property specifies if a variable has been declared or assigned a value yet.Following is the code implementing the JavaScript undefined property −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;       color: red;    } JavaScript undefined property CLICK HERE CLICK the above button to know if variable age has been defined or not    let sampleEle = document.querySelector(".sample");    let age;   ... Read More

Template were introduced in ES6 to allow embed expressions inside a string. Instead of ‘’ or “” quotation marks they use the backticks (``). They offer a much better way of string interpolation and expressions can be embedded in a way like ${a+b}. It offers a much nicer syntax than the + operator.Following is the code for template strings in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 20px;       font-weight: 500;       ... Read More

Escape characters are characters that can be interpreted in some alternate way then what we intended to. To print these characters as it is, include backslash ‘\’ in front of them. Following are the escape characters in JavaScript −CodeResult\bBackspace\fForm FeedNew Line\rCarriage Return\tHorizontal Tabulator\vVertical Tabulator\'Single quote\"Double quote\BackslashFollowing is the code implement escape character Backslash in javaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;    } Escape characters in JavaScript ... Read More

In this article, we will learn about the difference between an array and a set in JavaScript. Arrays are used to store ordered collections of elements, whereas in Sets, we can store only unique values. What is an Array?  An Array is an ordered, indexed collection of values in JavaScript. It allows duplicate values and provides various built-in methods to manipulate elements. Syntax let numbers= [1, 2, 3, 4, 5]; What is a Set? A Set is an unordered collection of unique values in JavaScript. Unlike arrays, a Set does not allow duplicate values. Syntax let numbers= new Set([1, 2, ... Read More

Following is the code to pass JavaScript primitive and object types to function −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result {       font-size: 18px;       font-weight: 500;       color: blueviolet;    } Passing primitive/object types to function Click here Click on the above button to pass primitive and object to a function and call it    let BtnEle = document.querySelector(".Btn");    let resEle = document.querySelector(".result");    let person = { ... Read More

innerHTML − The innerHTML property returns the text, including all spacing and inner element tags. It preserves the formatting of the text and all the extra tags like , etc.innerText − The innerText property returns just the text, removing the spacing and the inner element tags.Following is the code for innerHTML and innerText in JavaScript −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result,    .sample {       font-size: 18px;       font-weight: 500;       color: red;   ... Read More