代码如下：
<%@ page language=”java” contentType=”text/html; charset=gbk”
pageEncoding=”gbk”%>
<%@ include file=”/pages/common/taglibs.jsp”%>
<!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”>
<html>
<head>
<script type=”text/javascript” src=”jquery-1.4.js”></script>
<script type=”text/javascript”>
$(document).ready(function(){
$(“input[id^=’buttonValidate’]”).click(function(){ //当点击所有的id中包含’buttonValidate’的input标签时，执行函数
var btnVal=$.trim($(this).val());//trim函数，去掉空格
var str = $(‘#textareaValidate’).val() + btnVal;//
$(‘#textareaValidate’).val(str);//
});
});
</script>
<title>Insert title here</title>
</head>
<body>
<form id=”form1″ name=”form1″ action=”” method=”post”>
<table id =”table1″ class=”base_table” cellspacing=”0″ border=”1″ style=”border-collapse: collapse”>
<tr>
<td >
<textarea cols=”75″ rows=”5″ id=”textareaValidate”></textarea>
</td>
</tr>
<tr id=”tr1″>
<td>
<input id=”buttonValidate1″ type=”button” value=” + “/>
<input id=”buttonValidate2″ type=”button” value=” – “/>
<input id=”buttonValidate3″ type=”button” value=” * “/>
<input id=”buttonValidate4″ type=”button” value=” / “/>
<input id=”buttonValidate5″ type=”button” value=” ! “/>
<input id=”buttonValidate6″ type=”button” value=” = “/>
<input id=”buttonValidate7″ type=”button” value=” < “/>
<input id=”buttonValidate8″ type=”button” value=” > “/>
<input id=”buttonValidate9″ type=”button” value=” & “/>
<input id=”buttonValidate10″ type=”button” value=” | “/>
