JavaScript implements adding, finding, and deleting elements

This article mainly summarizes the JavaScript implementation to add, find, delete elements of the method, very simple and practical, the need for small partners can refer to.

The code is simple, there is no more nonsense.

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<! DOCTYPE html>

Example two:

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Window.onload = function () {var Gaga = document.getElementById ("Gaga"); AddClass (Gaga, "GAGA1") addclass (Gaga, "Gaxx") ; Removeclass (Gaga, "GAGA1") removeclass (Gaga, "Gaga") function Hasclass (elements,cname) {return!! Elements.className.match (New RegExp ("(s|^)" + CName + "(s|$)")); (s|^) to determine whether there are spaces before (s | $) To determine whether there are spaces after two exclamation points to convert to Boolean to facilitate judgment}; function AddClass (elements,cname) {if (!hasclass (Elements,cname)) {Elements.classname = "" + CName;};}; function Removeclass (elements,cname) {if (Hasclass (Elements,cname)) {elements.classname = Elements.className.replace (New RegExp ("(s|^)" + CName + "(s|$)"), ""); Replace method is replacement}; }; };

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