copy of method.js

JAVA +MySql小型用户管理系统 运用Strust+Spring+Hibernate 3框架 实现mvc jsp融合JavaScript+Ajax 技术 程序还有待完善

     String.prototype.trim   =   function()   
  {   
          return   this.replace(/(^\s*)|(\s*$)/g,   "");   
  } 
     
 	function init()
	{
		document.forms[0].username.focus();
	}

	function checkCode()
	{
	    alert("进入javaScript....");
		
		$("randCodeResult").innerHTML = "用户名检测中....";
		var url = "../sshtest/servlet/UserServlet?method=checkCode";
		var params = "code="+$F('randCode');
		
		var myAjax = new Ajax.Request(
			url,
			{
				method:'post',
				parameters:params,
				onComplete:checkCodeCallBack,
				asynchronous:true
			}
		);
	}
	
	function checkCodeCallBack(request){
		
		$("randCodeResult").innerHTML=request.responseText;
		if("验证码输入有误"==request.responseText){
			alert("请重新输入");
			document.forms[0].code.focus();
		}
		
	}
	
	function checkUser()
	{
		if($F('username').length == 0 ) return;
		alert("进入javaScript.....");
		
		$("checkResult").innerHTML = "用户名检测中....";
	
		var url = "../login.do?usermethod=checkUserName";
		var params = "username="+$F('username');
		var myAjax = new Ajax.Request(
			url,
			{
				method:'post',
				parameters:params,
				onComplete:checkUserCallBack,
				asynchronous:true
			}
		);
	}
	
	//回调函数
	function checkUserCallBack(request){
		$("checkResult").innerHTML=request.responseText;
		//alert(request.responseText);
		if("用户名已经存在，请重新选择用户名！"==request.responseText){
			alert("请重新选择用户名！");
			document.forms[0].username.focus();
		}
		
	}
	
	function checkdata(registerForm) 
	{ 
	       var username=registerForm.username.value;

       	   var password=registerForm.password.value;
	   
       	   var truepassword=registerForm.truepassword.value;
			   
	       var email=registerForm.email.value; 
	   		
	       var birthday=registerForm.birthday.value;
	       
	
	       
		  
		if(username.length<4||username.length>30)
		{
			alert("用户名长度必须在1位到20位之间");
			return false;
		}
		if(password.length<6||password.length>20)
		{
			alert("密码长度必须在6位到10位之间");
			return false;
		}
		if(password!=truepassword)
		{
			alert("密码不匹配");
			return false;
		}
		if(email==""||(email.indexOf('@')==-1)||(email.indexOf('.')==-1))
	        {
	    	 alert("电子邮件填写不正确");
			 return false;
	        }		
		if(inputCode.length <=0)
			{
			alert("请输入验证码！");
			 return false;
			}
		
		return true;
		}