How to check class name using javascript?? I am using this statement.. if (document.getElementByClass("expandable")

but it give me error.. "Object doesn't support this property or method"

How to check class name using javascript?? I am using this statement.. if (document.getElementByClass("expandable")

but it give me error.. "Object doesn't support this property or method"

• javascript

• 1 doubled question stackoverflow./questions/1422629/… – Anatoly Commented Aug 5, 2011 at 8:59
• if you want to check class name of some element - document.getElementById('myid').className. What you are trying to do is get elements that have some class as it seems to me... – Gatekeeper Commented Aug 5, 2011 at 9:04
• possible duplicate of Get All Elements in an HTML document with a specific CSS Class – Felix Kling Commented Aug 5, 2011 at 10:43

4 Answers 4

Because you just made that method up!

You want document.getElementsByClassName: https://developer.mozilla/en/DOM/document.getElementsByClassName

There is no function document.getElementByClass. Either check for the property .className of potential objects, or use a higher level framework which implements this (Such as jquery). This is the syntax with jquery:

$(".expandable")

Via pure javascript:
You can use the getElementsByClassName from this question

With jQuery, this is lot more simple, use the class selector:

$(".className)

1. There is no function like getElementByClass.

2. You have to use document.getElementsByClassName; it will return an array so you have to use loop to get values.

But MSIE will not support this function so you have to check your class name like:

((document.getElementsByTagName("div"))[i].className)=="yourclassname"