ProblemWe are required to write a JavaScript function that takes in two numbers, let’s call them m and n as first and the second argument respectively.The task of our function is to remove n digits from the number m so that the number m is the smallest possible number after removing n digits. And finally, the function should return the number m after removing digits.For example, if the input to the function is −const m = '45456757'; const n = 3;Then the output should be −const output = '44557';Output Explanation:We removed 5, 6 and 7 digit to get the smallest ... Read More

ProblemWe are required to write a JavaScript function that takes in the root of a Binary Search Tree as the only argument.The function should simply calculate the sum of data stored in the left leaves of the BST.For example, if the Tree looks like this −8 / \ 1 10 / \ 5 17Then the output should be −const output = 6;Output Explanation:Because there are two left leaves in the Tree with values 1 and 5.ExampleThe code for this will be − Live Democlass Node{    constructor(data) {       this.data = data;       this.left = null;   ... Read More

The quest for finding the largest sum of subarrays in JavaScript is a pursuit of paramount importance for developers seeking to optimize algorithmic efficiency and unravel the hidden potential within their data sets. In the realm of computational problem-solving, the ability to identify and compute the maximal cumulative sum of subsets within an array holds the key to unlocking insights and driving impactful decision-making processes. In this article, we embark upon a comprehensive exploration of the methodologies and techniques required to tackle this intricate challenge, employing a diverse array of rarely used words to elucidate the intricacies of JavaScript programming. ... Read More

ProblemSuppose, we have the following code that creates a Binary Search Tree DS and provides us with the functionality to insert node −class Node{    constructor(data) {       this.data = data;       this.left = null;       this.right = null;    }; }; class BinarySearchTree{    constructor(){       // root of a binary seach tree       this.root = null;    }    insert(data){       var newNode = new Node(data);       if(this.root === null){          this.root = newNode;       }else{       ... Read More

ProblemWe are required to write a JavaScript function that takes in the string of characters as the only argument.Our function should prepare and a new string based on the original string in which the characters that appear for most number of times are placed first followed by number with decreasing frequencies.For example, if the input to the function is −const str = 'free';Then the output should be −const output = 'eefr';Output Explanation:Since e appears twice it is placed first followed by r and f.ExampleThe code for this will be − Live Democonst str = 'free'; const frequencySort = (str = '') ... Read More

ProblemWe are required to write a JavaScript function that takes in a string of characters as the only argument. Our function needs to check if the string str can be constructed by taking a substring of it and appending multiple copies of the substring together.For example, if the input to the function is −const str = 'thisthisthisthis';Then the output should be −const output = true;Output Explanation:Because the string is made by appending ‘this’ string repeatedly.ExampleThe code for this will be − Live Democonst str = 'thisthisthisthis'; const repeatedSubstring = (str = '') => {    const {length} = str;    const ... Read More

CSS animations allow us to display hidden elements. The elements can be set hidden using the opacity. Set the opacity to the value 0 and the element will hide. To display it, set the transition property with the opacity and also set the transition duration to make it look like fade in effect. Set the container The container div is set. Within that, set two child divs − Hide a child div A child div is set with the opacity value 0 to make it invisible when the ... Read More

The insertRule() helps us add a rule at a defined position in the stylesheet while deleteRule() deletes a specific style on a web page. The following examples illustrate CSS rules that can be added to a stylesheet using JavaScript. Insert a Rule To insert a rule at a defined position, use the insertRule() method. The margin, padding, and box-shadow is also set. First, the custom id is set using the getElementById() − let newSheet = document.getElementById('custom').sheet let cs = 'p {'; cs += 'margin: 4%;'; cs += 'padding: 2%;'; cs += 'font-size: 22px;'; cs += 'box-shadow: ... Read More

To return the height of an element, scrollable height, height including padding, border and scrollbar, then use these properties; clientHeight − The clientHeight gives the measure of the height of an element including the padding. Note that border, margin, and scrollbar height (if rendered) are not included in this. offsetHeight − The offsetHeight gives the measure of the height of an element including the vertical padding, top and bottom borders. Margin is not including here. scrollHeight − scrollHeight gives the measure of the height of an element including the vertical padding and the content which is not visible on ... Read More

Using JavaScript, we can set our TextArea element to automatically grow with its content. The following examples illustrate how we can achieve the above scenario. Let us say the following is our TextArea before adding content − The following is the TextArea after adding content − The following is the same TextArea that auto grows itself after adding more content − Auto Grow a Textarea Example Let us see how to auto grow a textarea − * { ... Read More