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Accessing the HTML DOM - Finding HTML elements
Accessing HTML Elements (Nodes)
Accessing an HTML element is the same as accessing a Node.
You can access an HTML element in different ways:
- By using the getElementById() method
- By using the getElementsByTagName() method
- By using the getElementsByClassName() method
The getElementById() Method
The getElementById() method returns the element with the specified ID:
Syntax
node.getElementById("id");
The following example gets the element with id="intro":
The getElementsByTagName() Method
getElementsByTagName() returns all elements with a specified tag name.
Syntax
node.getElementsByTagName("tagname");
The following example returns a list of all <p> elements in the document:
The following example returns a list of all <p> elements that are descendants (children, grand-children, etc.) of the element with id="main":
The getElementsByClassName() Method
If you want to find all HTML elements with the same class name. Use this
method:
document.getElementsByClassName("intro");
The example above returns a list of all elements with class="intro".
NOTE: getElementsByClassName() does not work in Internet Explorer 5,6,7, and 8.
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