The text/javascript content type is obsolete. This was used in the early days of Html.application/x-javascript was an experimental content type(hence the x-). You should not be using this in your application.The correct content type to use in browsers is application/javascript. This helps browsers accept the content as js code.Read More

Pluck has been removed from lodash 4. This is because it did the same thing as a map.As a replacement, you can use the map function in the following way −Exampleimport _ from 'lodash' const objects = [{ 'a': 1 }, { 'a': 2 }]; console.log(_.map(objects, 'a'))OutputThis will give the output −[1, 2]

Pluck has been removed from lodash 4. This is because it did the same thing as a map.As a replacement, you can use the map function in the following way −Exampleimport _ from 'lodash' const objects = [{ 'a': 1 }, { 'a': 2 }]; console.log(_.map(objects, 'a'))This will give the output −Output[1, 2]

JavaScript used to be single-threaded. It runs using what is called an event loop.The Event Loop has one simple job — to monitor the Call Stack and the Callback Queue. If the Call Stack is empty, it will take the first event from the queue and will push it to ... Read More

To test if a letter in a string is uppercase or lowercase using javascript, you can simply convert the char to its respective case and see the result.Examplefunction checkCase(ch) {    if (!isNaN(ch * 1)){       return 'ch is numeric';    }     else {     ... Read More

JS frameworks are JavaScript code libraries that have pre-written code to use for routine programming features and tasks. It is literally a framework to build websites or web applications around.For example, in plain JS, you have to manually update the DOM using DOM APIs for setting styles updating content, etc.JS ... Read More

To get a subset of object's properties and create a new object out of those properties, use object destructuring and property shorthand. For example, You have the following object −Exampleconst person = {    name: 'John',    age: 40,    city: 'LA',    school: 'High School' }And you only want ... Read More

To get a subset of object's properties and create a new object out of those properties, use object destructuring and property shorthand. For example, You have the following object −Exampleconst person = {    name: 'John',    age: 40,    city: 'LA',    school: 'High School' }And you only want ... Read More

Nothing. They can get to V8 speed if proper investments are made in optimizing those language engines as are made for JS by Google in the V8 project.This is all really a matter of how much push is provided to the language by sponsoring organizations to further the development and ... Read More

Arrays can be compared in 2 ways −They refer to the same array object in memory.They may refer to different objects but their contents are all equal.ExampleFor case 1, jasmine provides the toBe method. This checks for reference. For example, describe("Array Equality", () => {    it("should check for array ... Read More