Menu
What's the best way to get an array of all elements in an html document with a specific CSS class using javascript?
No javascript frameworks like jQuery allowed here right now, and I could loop all the elements and check them manually myself. I'm hoping for something a little more elegant.
826
The querySelectorAll() method returns all elements that matches a CSS selector(s).
We can get text from multiple elements with the same class in Selenium webdriver. We have to use find_elements_by_xpath(), find_elements_by_class_name() or find_elements_by_css_selector() method which returns a list of all matching elements.
The getElementsByClassName() method returns a collection of elements with a specified class name(s). The getElementsByClassName() method returns an HTMLCollection. The getElementsByClassName() property is read-only.
To select elements with a specific class, write a period (.) character, followed by the name of the class. You can also specify that only specific HTML elements should be affected by a class. To do this, start with the element name, then write the period (.)
1) Get all elements in the document (document.getElementsByTagName('*'))
2) Do a regular expression match on the element's className attribute for each element
125
The below answer is now pushing four years old, so it's worth noting that native browser support for getElementsByClassName() has gotten a lot better. But if you must support older browsers, then...
Use one that's already been written. Most major JS libraries include one in some form or another, but if you aren't using one of them then i can recommend Robert Nyman's excellent implementation:
http://code.google.com/p/getelementsbyclassname/
http://www.robertnyman.com/2008/05/27/the-ultimate-getelementsbyclassname-anno-2008/
There are just too many ways to make this (conceptually-simple) routine slow and buggy to justify writing your own implementation at this point.
39
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
