JavaScript HTML DOM Document
The HTML DOM document object is the owner of all other objects in your web page.
The HTML DOM Document Object
The document object represents your web page.
If you want to access any element in an HTML page, you always start with accessing the
document object.
Below are some examples of how you can use the document object to access and
manipulate HTML.
Finding HTML Elements
Method
Description
document.getElementById(id)
Find an element by element id
document.getElementsByTagName(name)
Find elements by tag name
document.getElementsByClassName(name)
Find elements by class name
Changing HTML Elements
Property
Description
element.innerHTML = new html content
Change the inner HTML of an element
element.attribute = new value
Change the attribute value of an HTML element
element.style.property = new style
Change the style of an HTML element
Method
Description
element.setAttribute(attribute, value)
Change the attribute value of an HTML element
Adding and Deleting Elements
Method
Description
document.createElement(element)
Create an HTML element
document.removeChild(element)
Remove an HTML element
document.appendChild(element)
Add an HTML element
document.replaceChild(new, old)
Replace an HTML element
document.write(text)
Write into the HTML output stream
Adding Events Handlers
Method
Description
document.getElementById(id).onclick = function(){code}
Adding event handler code to an onclick event
Finding HTML Objects
The first HTML DOM Level 1 (1998), defined 11 HTML objects, object collections, and properties. These are still valid in HTML5.
Later, in HTML DOM Level 3, more objects, collections, and properties were added.
Property
Description
DOM
document.anchors
Returns all <a> elements that have a name attribute
1
document.applets
Deprecated
1
document.baseURI
Returns the absolute base URI of the document
3
document.body
Returns the <body> element
1
document.cookie
Returns the document's cookie
1
document.doctype
Returns the document's doctype
3
document.documentElement
Returns the <html> element
3
document.documentMode
Returns the mode used by the browser
3
document.documentURI
Returns the URI of the document
3
document.domain
Returns the domain name of the document server
1
document.domConfig
Obsolete.
3
document.embeds
Returns all <embed> elements
3
document.forms
Returns all <form> elements
1
document.head
Returns the <head> element
3
document.images
Returns all <img> elements
1
document.implementation
Returns the DOM implementation
3
document.inputEncoding
Returns the document's encoding (character set)
3
document.lastModified
Returns the date and time the document was updated
3
document.links
Returns all <area> and <a> elements that have a href attribute
1
document.readyState
Returns the (loading) status of the document
3
document.referrer
Returns the URI of the referrer (the linking document)
1
document.scripts
Returns all <script> elements
3
document.strictErrorChecking
Returns if error checking is enforced
3
document.title
Returns the <title> element
1
document.URL
Returns the complete URL of the document
1
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+1
Reference: https://www.w3schools.com/js/js_htmldom_document.asp
JavaScript HTML DOM Document
JavaScript is the world's most popular programming language.
JavaScript is the programming language of the Web.
JavaScript is easy to learn.
This tutorial will teach you JavaScript from basic to advanced.
JavaScript is the programming language of the Web.
JavaScript is easy to learn.
This tutorial will teach you JavaScript from basic to advanced.