JS encapsulation function example for retrieving elements through className, jsclassname

JS encapsulation function example for retrieving elements through className, jsclassname

This example describes how to use the className function to obtain elements in JS encapsulation. We will share this with you for your reference. The details are as follows:

<Div id = "box"> <div class = "star"> </div> <div class = "star"> </div> <div class = "app"> </div> <p class = "star"> </p> <p class = "ar"> </p> </div>

Assume that you want to obtain all. star elements.

Function getByClass (oparent, sClass) {var aEle = oparent. getElementsByTagName ("*"); var aResult = []; var I; for (I = 0; I <aEle. length; I ++) {if (aEle [I]. className = sClass) {aResult. push (aEle [I]) ;}} return aResult ;}; window. onload = function () {var box = document. getElementById ("box"); var star = getByClass (box, "star ");};