Given a JavaScript array, see how to clear it and empty all its elementsThere are various ways to empty a JavaScript array.The easiest one is to set its length to 0:const list = ['a', 'b', 'c'] list.length = 0Another method mutates the original array reference, assigning an ...
How to find duplicate values in a JavaScript array - In this tutorial, we will discuss how we can find duplicate or repeating values in a JavaScript array using different methods or approaches to reach the solution to this problem. Below is the list of t
So far, we have gone through how to define functions using thefunctionkeyword. However, there is a newer, more concise method of defining a function known asarrow function expressionsas ofECMAScript 6. Arrow functions, as they are commonly known, are represented by an equals sign followed by ...
Read the tutorial and learn how to define a global variable in a JavaScript function. Also, read about the differences about the global and local variables.
How to define a variable in JavaScript? Like other programming languages, defining a variable in JavaScript follows the below lifecycle: Let's discuss and understand all these phases of variable definition in the below sections. How to declare a variable in JavaScript?
arrow function to iterate through each element in an existing array, and only returns the ones that pass the specified test/conditions. Elements that pass are then placed into a new array.Using filter() doesn’t change the original array, and it doesn’t apply the function to empty elements...
Now, JavaScript has its own built-in way to make API requests. This is the Fetch API, a new standard to make server requests with Promises, but which also includes additional features. In this tutorial, you will create both GET and POST requests using the Fetch API. ...
You can also define your own default values for variables in the assignment: const [name = 'John Doe', age = 30] = ['Atta']; console.log(name); // Atta console.log(age); // 30 The age property falls back to 30 because it is not defined in the array. Swapping variables The ...
Basically I have a form with a username textbox and a submit button in it. Now what I want is that when the user input text in textbox it should get the textbox value and send the username to server so the server could check whether the username is taken by any other user or not...
...and use$(".myClass").change()to define what to do when an element has been changed. jQuery focus(): http://api.jquery./focus/ jQuery change(): http://api.jquery./change/ As soon as your form is loaded, loop through all input elements and save their values in an array. ...