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HTML DOM getElementsByTagName() Method

Element Object Reference Element Object

Example

Change the text of the first list item (index 0) in a list:

var list = document.getElementsByTagName("UL")[0]
list.getElementsByTagName("LI")[0].innerHTML = "Milk";

Before changing the text:

  • Coffee
  • Tea

After changing the text:

  • Milk
  • Tea

Try it yourself »

Definition and Usage

The getElementsByTagName() method returns a collection of an elements's child elements with the specified tagname, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: The parametervalue "*" returns all of the element's child elements.


Browser Support

The numbers in the table specifies the first browser version that fully supports the method.

Method
getElementsByTagName() 1.0 6.0 3.0 3.0 9.5


Syntax

element.getElementsByTagName(tagname)

Parameter Values

Parameter Type Description
tagname String Required. The tagname of the child elements you want to get

Technical Details

DOM Version Core Level 1 Element Object
Return Value: A NodeList object, representing a collection of the element's child elements with the specified tagname. The elements in the returned collection are sorted as they appear in the source code.


More Examples

Example

Find out how many <p> elements there are inside a <div> element (using the length property of the NodeList object):

document.getElementById("myDIV").getElementsByTagName("P").length;

Try it yourself »

Example

Change the background color of the second <p> element (index 1) inside a <div> element:

var x = document.getElementById("myDIV");
x.getElementsByTagName("P")[1].style.backgroundColor = "red";

Try it yourself »

Example

Change the background color of all <p> elements inside a <div> element:

var x = document.getElementById("myDIV");
var y = x.getElementsByTagName("P");
var i;
for (i = 0; i < y.length; i++) {
  y[i].style.backgroundColor = "red";
}

Try it yourself »

Example

Using the "*" parameter.

Change the background color of the fourth element (index 3) inside a <div> element:

var x = document.getElementById("myDIV");
x.getElementsByTagName("*")[3].style.backgroundColor = "red";

Try it yourself »

Example

Using the "*" parameter.

Change the background color of all elements inside a <div> element:

var x = document.getElementById("myDIV");
var y = x.getElementsByTagName("*");
var i;
for (i = 0; i < y.length; i++) {
  y[i].style.backgroundColor = "red";
}

Try it yourself »

Related Pages

JavaScript Reference: document.getElementsByTagName()


Element Object Reference Element Object


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