Javascript：如何遍历页面上的所有DOM元素？

Question

Javascript：如何遍历页面上的所有DOM元素？

我正在尝试遍历页面上的所有元素，所以我想检查此页面上存在的每个元素是否有特殊类。

那么，我怎么说我想检查每个元素？

Answer 1

这是关于如何循环文档或元素的另一个示例：function getNodeList(elem){var l=new Array(elem),c=1,ret=new Array();//This first loop will loop until the count var is stable//for(var r=0;r<c;r++){&nbsp; &nbsp; //This loop will loop thru the child element list//&nbsp; &nbsp; for(var z=0;z<l[r].childNodes.length;z++){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;//Push the element to the return array.&nbsp; &nbsp; &nbsp; &nbsp; ret.push(l[r].childNodes[z]);&nbsp; &nbsp; &nbsp; &nbsp; if(l[r].childNodes[z].childNodes[0]){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; l.push(l[r].childNodes[z]);c++;&nbsp; &nbsp; &nbsp; &nbsp; }//IF&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; }//FOR}//FORreturn ret;}