Get an in-depth explanation of what getElementById is in JavaScript, how to use it, and see some examples of common use cases.
Checkout this video:
Introduction
getElementById is a JavaScript function that returns a reference to the first element in thedocument with the specified id. The id can be used to identify the element in JavaScript code, and CSS code.
The getElementById function is used like this:
var element = document.getElementById(“id”);
Where “id” is the value of the id attribute of an element.
If there are multiple elements with the same id, only the first one is returned.
What is getElementById?
The getElementById() method returns the element that has the ID attribute with the specified value. This method is one of the most common methods in the HTML DOM, and is used almost every time you want to manipulate, or get information from, an element on your document.
Syntax
The syntax of the getElementById() method is as follows:
document.getElementById(id)
Here, id is a string representing the id of an HTML element.
This method returns the element with the specified id (if any). If there are more than oneelement with the specified id, only the first element in the document is returned.
Examples
Here are some examples of using getElementById():
“`
re
Browser Support
getElementById is a JavaScript function that returns the element that has the ID attribute with the specified value. The ID value can be anything:
-A string
-A number
-A keyword
The getElementById function is used to return a single element. It is one of the most common methods used to access elements in a document.
The getElementById function can be used to find all elements with a matching ID value, but it will only return the first element it finds.
Conclusion
As you can see, getElementById is a very powerful and versatile method that can be used to easily access and manipulate elements in your HTML document. I hope this article has helped you to better understand how this method works and how you can use it in your own web development projects.
