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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script> window.onload=function () { var oBtn=document.getElementById(‘btn1‘); var oTxt1=document.getElementById(‘txt1‘); var oTxt2=document.getElementById(‘txt2‘); oBtn.onclick=function () { oTxt1.value+=oTxt2.value+‘\n‘;//换行 oTxt2.value=‘‘;//清空输入框 }; oTxt2.onkeydown=function (ev) { var oEvent=ev||event;//事件处理兼容 if(oEvent.keyCode==13)//取键盘的回车事件 { oTxt1.value+=oTxt2.value+‘\n‘; oTxt2.value=‘‘; } }; }; </script> </head> <body> <textarea id="txt1" rows="10" cols="40"></textarea><br /> <input id="txt2" type="text" /> <input id="btn1" type="button" value="留言" /> </body> </html>
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原文地址:http://www.cnblogs.com/zxyun/p/4703315.html