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The JavaScript arrayBuffer.slice() method returns a new arrayBuffer whose contents are copy of the another arrayBuffer from begin, inclusive till end, exclusive.Following is the code for the arrayBuffer.slice() method −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample, .result { font-size: 18px; font-weight: 500; color: red; } .result { color: black; } JavaScript arrayBuffer.slice() property Original array buffer: Sliced array buffer: CLICK HERE Click on the above button to slice the array buffer to make ... Read More
The JavaScript date.@@toPrimitive() function converts the date object into a primitive value.Following is the code for date formats in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample { font-size: 18px; font-weight: 500; } JavaScript date.@@toPrimitive() functiont CLICK HERE Click on the above button to see the date as primitive value let fillEle = document.querySelector(".sample"); let date = new Date(); let primitiveDef = date[Symbol.toPrimitive]("default"); let primitiveNum = date[Symbol.toPrimitive]("number"); document.querySelector(".Btn").addEventListener("click", () => { fillEle.innerHTML += "Hint = default :" + primitiveDef + ""; fillEle.innerHTML += "Hint = number :" + primitiveNum; }); OutputOn clicking the “CLICK HERE” button −
The JavaScript File WebAPI file.type property indicated the media type of the file.Following is the code for the File WebApi File.type property −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 18px; font-weight: 500; color: red; } JavaScript file.type property Upload a file using the above input type to get its file type let resultEle = document.querySelector(".result"); document .querySelector(".fileInput") .addEventListener("change", (event) => { resultEle.innerHTML += "File name = " + event.target.files[0].name + ""; resultEle.innerHTML += "File type = " + event.target.files[0].type; }); OutputOn clicking the “Choose file” button −
The JavaScript File WebAPI file.size property returns the size of file in bytes.Following is the code for the File WebApi File.size property −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 18px; font-weight: 500; color: red; } JavaScript file.size property Upload a file using the above input type to get its file size let resultEle = document.querySelector(".result"); document .querySelector(".fileInput") .addEventListener("change", (event) => { resultEle.innerHTML += "File name = " + event.target.files[0].name + ‘; resultEle.innerHTML ... Read More
To detect the pressed arrow key in JavaScript, the code is as follows;Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample { font-size: 18px; font-weight: 500; } Detecting the pressed arrow key Press any arrow key to know which arrow key has been pressed let fillEle = document.querySelector(".sample"); document.body.addEventListener("keydown", (event) => { switch (event.keyCode) { case 37: fillEle.innerHTML = "Left key pressed"; break; case 38: fillEle.innerHTML = "Up key pressed"; break; case 39: fillEle.innerHTML = "Right key pressed"; break; case 40: fillEle.innerHTML = "Down key pressed"; break; } }); OutputOn pressing any of the arrow key −
Following is the code for detecting a mobile browser in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .sample { font-size: 18px; font-weight: 500; } Detecting a mobile browser CLICK HERE Click on the above button to see if it is a mobile device or not let fillEle = document.querySelector(".sample"); let date = new Date(); let primitiveDef = date[Symbol.toPrimitive]("default"); let primitiveNum = date[Symbol.toPrimitive]("number"); document.querySelector(".Btn").addEventListener("click", () => { var checkMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent); if (checkMobile) { fillEle.innerHTML = "This ... Read More
To get an enumerator that iterates through Collection, the code is as follows −Example Live Demousing System; using System.Collections.ObjectModel; public class Demo { public static void Main(){ Collection col = new Collection(); col.Add("Andy"); col.Add("Kevin"); col.Add("John"); col.Add("Kevin"); col.Add("Mary"); col.Add("Katie"); col.Add("Barry"); col.Add("Nathan"); col.Add("Mark"); Console.WriteLine("Count of elements = "+ col.Count); Console.WriteLine("Iterating through the collection..."); var enumerator = col.GetEnumerator(); while (enumerator.MoveNext()) { ... Read More
Suppose there is a special square room with mirrors on each of the four walls. In each corner except the southwest corner, there are receptors. These are numbered as 0, 1, and 2. Now the square room has walls of length p, and a laser ray from the southwest corner first meets the east wall at a distance q from the 0th receptor. We have to find the number of the receptor that the ray meets first.So if p = 2, and q = 1, then the case will be like −So the output will be 2, as the ray ... Read More
Suppose we have a balanced parentheses string S, we have to compute the score of the string based on the following rule −The () has score 1AB has score A + B, where A and B are two balanced parentheses strings.(A) has score 2 * A, where A is a balanced parentheses string.So if the input is like “(()(()))”, then the output will be 6.To solve this, we will follow these steps −ans := 0, define a stack stfor i in range 0 to size of string Sif S[i] is opening parentheses, then insert -1 into stackotherwiseif top of stack ... Read More
Suppose there are N cars that are going to the same destination along a one lane road. The destination is ‘target’ miles away. Now each car i has a constant speed value speed[i] (in miles per hour), and initial position is position[i] miles towards the target along the road.A car can never pass another car ahead of it, but it can catch up to it, and drive bumper to bumper at the same speed. Here the distance between these two cars is ignored - they are assumed to have the same position. A car fleet is some non-empty set of ... Read More