<%@ page language="java" contentType="text/html"
    pageEncoding="utf-8"%>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<script language="javascript">  
  function funcChina(){ 
  
  var obj = document.form1.txtName.value; 
  
  var tt=/^[\s\S]*abc$/;
  
  if(tt.test(obj)) 
  { 
  alert("含有abc！"); 
  } else{
  alert("不含有abc！");
  }
  } 
</script> 
<form name="form1">
<input type="text" name="txtName">
<input type="button" name="butTxt" value="开始判断" οnclick="funcChina()">
</form>
</body>
</html>