# JavaScript HTML DOM Elements

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This page teaches you how to find and access HTML elements in an HTML page.

## Finding HTML Elements

Often, with JavaScript, you want to manipulate HTML elements.

To do so, you have to find the elements first. There are a couple of ways to do this:

- Finding HTML elements by id
- Finding HTML elements by tag name
- Finding HTML elements by class name
- Finding HTML elements by HTML object collections

## Finding HTML Elements by Id

The easiest way to find HTML elements in the DOM, is by using the element id.

This example finds the element with id="intro":

## Example

var x = document.getElementById("intro");
Try it Yourself »

If the element is found, the method will return the element as an object (in x).

If the element is not found, x will contain null.

## Finding HTML Elements by Tag Name

This example finds the element with id="main", and then finds all <p> elements inside "main":

## Example

var x = document.getElementById("main");
var y = x.getElementsByTagName("p");
Try it Yourself »

## Finding HTML Elements by Class Name

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".

| Finding elements by class name does not work in Internet Explorer 5,6,7, and 8.

## Finding HTML Elements by HTML Object Collections

This example finds the form element with id="frm1", in the forms collection, and displays all element values:

## Example

var x = document.getElementById("frm1");
var text = "";
var i;
for (i = 0; i < x.length; i++) {
text += x.elements[i].value + "<br>";
}
document.getElementById("demo").innerHTML = text;
Try it Yourself »

The following HTML objects (and object collections) are also accessible:

- document.anchors
- document.body
- document.documentElement
- document.embeds
- document.forms
- document.head
- document.images
- document.links
- document.scripts
- document.title

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