JavaScript Data Types are Number, String, Boolean, Function, Object, Null, Undefined Read More 8:: How to create arrays in JavaScript? We can declare an array like this var scripts = new Array() We can add elements to this array like this ...
The foreach() method in JavaScript returns undefined, so we cannot perform any calculations on it. It can be used to perform side effects in arrays like logging or saving value to the database, etc. 10. What is the difference between ‘===’ and ‘==’ in Javascript? === == Compar...
This collection of JavaScript MCQ Questions includes 1000's of objective type interview questions on JavaScript Programming Language.
2. Implement a function that finds the maximum number in an array. Depending on the candidate’s answer, the manager can determine how effectively the interviewee can work with arrays. The managers can also understand the capability to communicate technical solutions.function findMaxNumber(arr) {...
JavaScript Objects JavaScript - Number JavaScript - Boolean JavaScript - Strings JavaScript - Arrays JavaScript - Date JavaScript - DataView JavaScript - Handler JavaScript - Math JavaScript - RegExp JavaScript - Symbol JavaScript - Sets JavaScript - WeakSet JavaScript - Maps JavaScript - WeakMap JavaSc...
As a result, the statement arr2.push(arr3); adds arr3 in its entirety as a single element to the end of arr2 (i.e., it does not concatenate the two arrays, that’s what the concat() method is for). Like Python, JavaScript honors negative subscripts in calls to array methods ...
arrays javascript object How to return object in such a way which should have unique key which store mulpltiple values Expected Result = Answer this function should return the result as you asked.Cypress select li and click on child span cypress javascript reactjs I am trying to select li...
Javascript Arrays are powerful structures indeed, even emulating many common data structures such as stacks and queues PropertiesDescription length Returns the length of the string (# of characters). prototype Use this property to attach additional properties and/or methods that get reflected in all...
JavaScript - 20 Questions General JavaScript, Operators and Statements Functions and Scope, Passing by Reference vs. by Value JavaScript Objects, Arrays Using JavaScript in Browsers: DOM, Events, SecuritySample JS Test QuestionWhich of the following JavaScript snippets will create an alert box ...
We can unpack values from arrays or properties from objects through destructuring. For example: [a, b] = [1, 2]; The value of a is now 1, and the value of b is now 2. What we actually did in the question, is: [y] = [1, 2, 3, 4, 5]; This means that the valu...