javascript get element by class

(adsbygoogle = window.adsbygoogle || []).push({}); To retrieve a list of every HTML element that has a particular CSS class name, we can use the document.getElementsByClassName() method like so: In the code above, you can see that we have an unordered list.

Definition and Usage. Consequently, if you use NodeList.item() on an empty HTMLCollection object, the method will return a NULL value. The className property sets or returns the class name of an element (the value of an element's class attribute). How to convert an Object {} to an Array [] of key-value pairs in JavaScript? The class name is used as a selector in HTML which helps to give some value to the element attributes. . How to get the first key name of a JavaScript object ? How to wrap table cell content using CSS ? Can you cancel a location request on Snapchat? Example 1: In this code change the class of the button from “default” to “changedClass” using the onclick event which in turn changes the background color of the button from RED to GREEN. How to change the background color after clicking the button in JavaScript ? Replace every element with the smallest element on its left side, Replace every element of the array with BitWise XOR of all other. Class are represented with .classname dot followed by class name in CSS. Here, we were able to get the first element in our HTMLCollection object by providing the NodeList.item() method with 0 as the index parameter.. What if there are no elements with that class name? Write Interview code. If there are no HTML elements with the class name in question, then the document.getElementsByClassName() method will return an empty HTMLCollection object. How to set input type date in dd-mm-yyyy format using HTML ? What is the “Quick Add” feature on Snapchat? We can also use querySelector() to get elements by class in javascript. [see DOM: Get Current Script Element] Get Element by Matching the Value of the “id” Attribute document.getElementById(id_string) Return a non-live element … Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Suppose that you have the following HTML: The following example illustrates how to use the getElementsByClassName() method to select the