To fix this, you can use map() in JavaScript.The syntax is as follows −var anyVariableName= new Array(yourSize).fill().map(Object);ExampleFollowing is the code −var arrayOfObject = new Array(5).fill().map(Object); console.log(arrayOfObject);To run the above program, you need to use the following command −node fileName.js.Here, my file name is demo311.js.OutputThis will produce the following output −PS ... Read More

Use some conditions to stop after some time.The below code will stop in half a minute.ExampleFollowing is the code −            Document    var now = new Date().getTime();    var interval = setInterval(function () {       ... Read More

To sort an array of integers, use sort() in JavaScript.ExampleFollowing is the code −var arrayOfIntegers = [67, 45, 98, 52]; arrayOfIntegers.sort(function (first, second) {    return first - second; }); console.log(arrayOfIntegers);To run the above program, you need to use the following command −node fileName.js.Here, my file name is demo310.js.OutputThis will ... Read More

Yes, we can use jQuery to get values of selected checkboxes using the concept of input. We have to also use the :checked selector.ExampleFollowing is the code −            Document        Cricket        Listening Music ... Read More

Extract the value and convert it from String to integer to get price value from span tag.ExampleFollowing is the code −            Document           Value=                10   ... Read More

To remove listener from outer function, use removeEventListener().ExampleFollowing is the code − Document Press Me    var demoId = document.getElementById('demo');    demoId.addEventListener('click', function fun() {       outerFunction(this, fun);    }, false);    function outerFunction(self, funct) {   ... Read More

To merger properties of two objects, you can use the concept of {...object1, ...object2, ... N).ExampleFollowing is the code −var firstObject = {    firstName: 'John',    lastName: 'Smith' }; var secondObject = {    countryName: 'US' }; var mergeObject = {...firstObject, ...secondObject}; console.log(mergeObject);To run the above program, you ... Read More

You can use your own function to get all combinations.ExampleFollowing is the code −function combination(values) {    function * combinationRepeat(size, v) {       if (size)          for (var chr of values)       yield * combinationRepeat(size - 1, v + chr);       ... Read More

We are required to write a function that compares two arrays and creates a third array filling that array with all the elements of the second array and filling null for all those elements that are present in the first array but misses out in the second array.For example:If the ... Read More

Given an array of integers, we are required to write a function that takes this array and finds the one element that appears an odd number of times.There will always be only one integer that appears an odd number of times. We will approach this problem by sorting the array. ... Read More