The JavaScript array.includes() method is used to check if an array contains a given element or not.Following is the code for the array.includes() method −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 20px;       font-weight: 500;    } JavaScript Array includes() CLICK HERE Click on the above button to check if the array contains lion element or not    let fillEle = document.querySelector(".sample");    let arr = ["cow", "bull", "lion", "tiger", "sheep"];    fillEle.innerHTML = arr;    document.querySelector(".Btn").addEventListener("click", () => {       fillEle.innerHTML = "Lion is present in array: " + arr.includes("lion");    }); OutputOn clicking the “CLICK HERE” button −

The JavaScript focus() method is used for focusing on an element only if the element can be focused.Following is the code for the JavaScript Focus() Method −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;    } JavaScript focus() CLICK HERE Click on the above buttons to focus the input field    let sampleEle = document.querySelector(".sample");    document.querySelector(".Btn").addEventListener("click", () => {       sampleEle.focus();    }); OutputOn clicking the “CLICK HERE” button −

The exec() method executes the search for match and if the matched text is found in the specified string then it is returned otherwise null is returned.Following is the code for the JavaScript exec() Method −Example Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;    } JavaScript exec() Lorem ipsum dolor, sit amet consectetur adipisicing. CLICK HERE Click on the above buttons to execute regex   ... Read More

The escape() function in JavaScript is used for encoding a string. It is deprecated in JavaScript 1.5.Following is the code for the JavaScript escape()Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;    } JavaScript escape() CLICK HERE Click on the above buttons to encode the URI    let sampleEle = document.querySelector(".sample");    let url = "https://www.google.com/images?size=420px&name=8s1f.jpg";    document.querySelector(".Btn").addEventListener("click", () => {       sampleEle.innerHTML = escape(url);    }); OutputOn clicking the “CLICK HERE” button −

The error name property is used for setting or getting the name of the error.Following is the code for the Error name property −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;    } JavaScript Error name Property CLICK HERE Click on the above buttons to see the error name    let sampleEle = document.querySelector(".sample");    document.querySelector(".Btn").addEventListener("click", () => {       try {          confrm("Are you sure");       } catch (e) {          sampleEle.innerHTML = "Error: " + e.name;       }    }); OutputOn clicking the “CLICK HERE” button −

The error message property sets or returns an error message in JavaScript. Following is the code for the error message property −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 18px;       font-weight: 500;    } JavaScript Error message Property CLICK HERE Click on the above buttons to see the error message    let sampleEle = document.querySelector(".sample");    document.querySelector(".Btn").addEventListener("click", () => {       try {          confrm('Are you sure');       } catch (e) {          sampleEle.innerHTML = "Error: " + e.message;       }    }); OutputOn clicking the “CLICK HERE” button −

The encodeURI() function encodes the complete URI including special characters except except (, / ? : @ & = + $ #) characters.The encodeURIComponent() function encodes some parts of the URI by basically encoding the special characters. It also encodes the following characters − (, / ? : @ & = + $ # )The decodeURI() function decodes the URI generated by the encodeURI() function.The decodeURIComponent() function is used to decode some parts of URI generated by encodeURIComponent().Following is the code for the encodeURI(), decodeURI() and its component functions −Example Live Demo Document    body { ... Read More

An image slider is a user interface component in JavaScript that allows users to view a series of images in a slideshow format. It is also known as a carousel or slideshow. An image slider consists of navigation buttons (such as next and previous buttons) that allow users to navigate from one image to the other. With the help of basic HTML for structuring and CSS for designing or making the image slider presentable, along with simple JavaScript logic, you can create an image slider efficiently. This article will guide you through creating a basic image slider with navigation buttons. ... Read More

To get the coordinates of mouse using JavaScript, the code is as follows −Example Live Demo    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 25px;       font-weight: 500;    } Coordinates of mouse Hover the mouse over the screen to get its x and y axis position    let sampleEle = document.querySelector(".sample");    document.body.addEventListener("mousemove", (event) => {       sampleEle.innerHTML = "X axis: " + event.x + " Y axis: " + event.y;    }); OutputThe above code will produce the following output:

An array is a special object in JavaScript, that stores multiple types of values which means that it can store an integer value, string value, or float value simultaneously. There are various ways to create an array in JavaScript, following is the syntax to do so − var array = [value1, value2, value3, …]; or var array = new Array(size); or var array = new Array(element1, element2, …); Where the value is the elements of the array so it can be of any type. The JSON is an object notation in JavaScript that is used to represent structured data ... Read More