<html> <head> <title>DOM对象</title> <script type="text/javascript"> function $(id) { return document.getElementById(id); } function insertText() { var val = window.prompt("请输入",""); //alert(val); if(val == null || val == "") return; //创建元素节点 var op = document.createElement("p"); //创建文本节点 var ot = document.createTextNode(val); //添加子节点 设立关系 op.appendChild(ot); var panel = $("opt"); //添加到页面 panel.appendChild(op); } function insertImg () { var img = document.createElement("img"); //设置属性 img.setAttribute("src","2.gif"); $("opt").insertBefore( img, $("opt").firstChild); } function deleteText() { //alert($("opt").lastChild.nodeName); var a = $("opt").childNodes; var b = new Array(); var obj = null; for(var i = 0,j = 0; i < a.length; i++ ) { if(a[i].nodeType == Node.TEXT_NODE) { continue; } b[j] = a[i]; j++; } $("opt").removeChild(b[b.length -1]); } </script> </head> <body> <div >DOM对象操作</div> 1.</br> <div id="opt"> <p>javase</p> <p>oracle</p> <p>xml</p> </div> 2.</br> <input type="button" value="填加段落" onclick="insertText()" /> <input type="button" value="插入图片" onclick="insertImg()" /> <input type="button" value="删除最后" onclick="deleteText()" /> </body> </html>
时间: 2024-10-07 01:46:01