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Using the Prototype js framework, how do you find all elements with a certain class?
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To select elements by a given class name, you use the getElementsByClassName() method: let elements = document. getElementsByClassName('className');
The getElementsByClassName method of Document interface returns an array-like object of all child elements which have all of the given class name(s). When called on the document object, the complete document is searched, including the root node.
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 (.)
Use the element element selector to select all elements inside another element.
You can use the $$ function to get elements by class:
$$(".myclass")
Will give you an array of elements you can iterate over. This function allows you to use any css selector to get the elements, too:
$$("li.myclass")
$$("p#test")
http://prototypejs.org/doc/latest/dom/dollar-dollar
$$ lets you pass in any css selector.
$$('.class')
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