In this blog post, I will show you how to use jQuery to get an element by its class name.
To get an element by its class name, we can use the jQuery selector syntax, which is similar to CSS selectors. For example, if we want to get all the elements that have the class “card”, we can write:
$(document).ready(function () {
$("#changeColorButton").click(function () {
$(".card").css("background-color", "blue");
});
});
In this example:
- We include the jQuery library from a CDN in thesection of the HTML document. We have three elements with the class “card” and a button with the id “changeColorButton.”
- We use $(document).ready() to ensure that the JavaScript code runs after the document is fully loaded.
- When the button with the id “changeColorButton” is clicked, we use the $(“.card”) selector to select all elements with the class “card.”
We use the .css() method to change the background color of all selected elements to blue.
This is just a basic example, but it illustrates how to use jQuery to select elements by class and manipulate them. You can perform various actions on the selected elements using jQuery methods like .css(), .text(), .html(), .addClass(), .removeClass(), and more.
You can use the jQuery filter() method to select a subset of elements from a matched set. For example, if you want to select all elements with the class “card” that are also descendants of an element with the id “container”, you can use the following selector:
$("#container").find(".card").filter(function() {
return $(this).closest("#container").length > 0;
});
You can use the jQuery eq() method to select a specific element from a matched set. For example, if you want to select the second element with the class “card”, you can use the following selector:
$(".card").eq(1);