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The cursor property is sets or returns the cursor type that will be displayed for the cursor property.Following is the code for implementing JavaScript Cursor property −Example Live Demo body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } JavaScript Cursor property Hover the mouse over the above paragraph after clicking the below button Change Cursor let sampleEle = document.querySelector(".sample"); document.querySelector(".Btn").addEventListener("click", () => { sampleEle.style.cursor = "crosshair"; }); OutputOn clicking the “Change Cursor” button −
The Array.from() creates a new array object from a given array instance.Following is the code for the array from() function −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample { font-size: 20px; font-weight: 500; } JavaScript Array from() example CLICK HERE Click on the above button to create the array from given string let fillEle = document.querySelector(".sample"); let arr = "HelloWorld"; fillEle.innerHTML = arr; document.querySelector(".Btn").addEventListener("click", () => { fillEle.innerHTML = Array.from(arr); }); OutputOn clicking the “CLICK HERE” button the string will convert into array as follows −
The findIndex() function in JavaScript returns the index of the first element value that satisfy a given condition in an array.Following is the code for the array find() function −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .findIndex { font-size: 20px; font-weight: 500; } JavaScript Array FindIndex() example CLICK HERE Click on the above button to get the index of lion in the array function findLion(animal) { return ... Read More
The JavaScript Array.isArray() method is used to check if an object is an array or not.Following is the code for the Array.isArray() method −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample { font-size: 20px; font-weight: 500; } JavaScript Array isArray() CLICK HERE Click on the above button to check if the above object is an array or not let fillEle = document.querySelector(".sample"); let arr = ["cow", "bull", ... Read More
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 −