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Properties can be shared by attaching them to the prototype property of the object. These properties will be shared among all the instances of the object.Following is the code for sharing properties in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 20px; font-weight: 500; color: blueviolet; } Shared properties in JavaScript CLICK HERE Click on the above button to the view properties of student1 and student2 ... Read More
Following is the code for passing a function as a callback in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 20px; font-weight: 500; color: blueviolet; } Passing a function as a callback CLICK HERE Click on the above button to pass the add2() function as callback to multiply9() function let resEle = document.querySelector(".result"); function add2(a) { return a + 2; } function multiply9(fn, num) { return fn(num) * 9; } document.querySelector(".Btn").addEventListener("click", () => { resEle.innerHTML = "The number returned = " + multiply9(add2, 12); }); OutputOn clicking the ‘CLICK HERE’ button −
Following is the code for invoking functions with call() and apply() 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; } Invoking functions with call() and apply() Click Here Click on the above buttons to invoke functions with call() and apply() method let resEle = document.querySelector(".result"); let BtnEle = document.querySelector(".Btn"); function addNum(num1, num2, num3, num4) { ... Read More
Following is the code to implement queue 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; } button { padding: 6px; margin: 4px; } Implementation of queue in JavaScript. Enqueue Dequeue Display Click on the above buttons to perform queue operations let resEle = document.querySelector(".result"); let BtnEle = ... Read More
Following is the code to implement stack 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; } button { padding: 6px; margin: 4px; } Implementation of Stack in JavaScript. Push Pop Display Click on the above buttons to perform stack operations let resEle = document.querySelector(".result"); let BtnEle = document.querySelector(".Btn"); ... Read More
Suppose we have a positive integer N, we reorder the digits in any order (including the original order) such that the leading digit is non-zero. We have to check whether we can do this in a way such that the resulting number is a power of 2. So if the number is like 46, then the answer will be true.To solve this, we will follow these steps −Define a method called count, this will take x as inputret := 0while x is not 0ret := ret + 10 ^ last digit of xx := x / 10return retFrom the main ... Read More
Following is the code to loop through array of arrays containing objects 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; } Loop through array of arrays containing objects in JavaScript CLICK HERE Click the above button to loop throught the arrObj let BtnEle = document.querySelector(".Btn"); let resEle = document.querySelector(".result"); let arrObj = [ ... Read More
Following is the code to pass event objects from one function to another in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } Pass event objects from one function to another in JavaScript CLICK HERE Click the above button to change its font size and color function changeFont(event) { event.target.style.fontSize = "32px"; changeColor(event); } function changeColor(event) { event.target.style.color = "red"; } OutputThe above code will produce the following output −On clicking the ‘CLICK HERE’ button −
Following is the code to change an object key without changing the original array in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } Change an object Key without changing the original array CLICK HERE Click the above button to change the name object key to fullName let BtnEle = document.querySelector(".Btn"); let resEle = document.querySelector(".result"); let sampleEle = document.querySelector(".sample"); let obj = [ { name: "Rohan Sharma", age: 12 }, ... Read More
Following is the code to a JavaScript array with a condition 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; } Joining a JavaScript array with a condition CLICK HERE Click the above button to join the array elements that are divisible by 2. let BtnEle = ... Read More