JavaScript Get Element By ID Value
Last Updated : Mar 11, 2024
IN - JavaScript | Written & Updated By - Dikshita
In this article we will show you the solution of JavaScript get element by id value, when document. getElementById() is called, and the element whose ID is specified is returned. This method returns elements whose IDs are provided by the getElementById() method.
An HTML DOM function like this is commonly used to change or return an element's value in web design.
When the passed ID does not exist, a null value is returned. The element should have a unique id so that it can be accessed quickly, and only one id should be used throughout the entire document.
This method returns an element instance whose id matches the string specified in the document. getElementById() is returned by this method.
A document's getElementById () function returns null if there are no elements with the specified id.
HTML documents have unique identifiers. The HTML language, however, allows for a lot of flexibility.
The method document. GetElementById () returns the first element found in the HTML document if the HTML document has multiple elements with the same id.
By giving the id tag of an HTML element to the inbuilt getElementById() function, we can get any HTML element by id in Javascript.
When the given ID does not match an element, it returns null. An element's id is unique in HTML, as we know.
This makes document.getElementById() a faster method for accessing elements. GetElementById() selects only the elements from the document object, whereas querySelector() selects all elements.
With the .click() method in Javascript, we were able to take action on behalf of the user, changing the image's width when they clicked on it.
Whether the image width is set, it will be used by the .attr() method in Javascript to set the border width.
Additionally, we will observe that when the button is clicked, the image will change to the width specified in the .attr() method. A null value is returned if there is no match for the ID in the getElementById() method.
The getElementByID() method is the only one supported by a global document object.
It is required that the value of the ID attribute be unique throughout the entire HTML document.
A document object can be accessed via getElementById().
There is one argument that is taken as part of the getElementById() method. This argument consists of a string.
HTML markup specifies an ID attribute that must be equal to the string value.
Step By Step Guide On JavaScript Get Element By ID Value :-
<html>
<body>
<p id="element">TalkersCode GetElementById</p>
<script>
var s = document. getElementById("element"). innerHTML;
document. write(s);
</script>
</body>
</html>
- In the first step, we write <HTML>, which tells the browser what HTML version we're using. HTML tags have used at the beginning of HTML documents.
- Then we open the body a for creating webpage.
- Then we create a paragraph for creating elements.
- Then we added an HTML page with a <script> tag.
- Then we create document using get element by id.
- After that we close </script></body> and </html>
Conclusion :-
An element that has an ID attribute with a specified value can be returned using the getElementById() DOM method.
Almost every time we need to manipulate an element within a document, we use this method in the HTML DOM.
I hope this article on JavaScript get element by id value helps you and the steps and method mentioned above are easy to follow and implement.
About Dikshita
