<!doctype html> <html lang="en"> <head> <meta charset="UTF-8" /> <title>点击收缩，点击展开</title> <script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script> </head> <body> <p> <span>测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩测试点击展收缩</span><span class="span">.....</span><a href="javascript:;">>>收缩</a> </p> <script type="text/javascript"> window.onload = function(){ var oP = document.getElementsByTagName('p')[0]; var oSpan = oP.getElementsByTagName('span')[0]; var oA = oP.getElementsByTagName('a')[0]; var str = oSpan.innerHTML; var onOff = true; oA.onclick = function(){ if( onOff ){ oSpan.innerHTML=str.substring(0,30);//substr slice都可以 oA.innerHTML = '>>展开'; $(".span").show(); //onOff = false; }else{ oSpan.innerHTML=str; oA.innerHTML = '>>收缩'; $(".span").hide(); //onOff = true; } onOff = !onOff; }; }; </script> </body> </html>
