struts中验证密码和密码确认框输入的一样

function comparePwd()
{
var pwd1=document.forms[0].userAccountsPwd.value; userAccountsPwd为控件property
var pwd2=document.forms[0].userAccountsPwdOK.value;
if(pwd2!=pwd1)
{
alert("两次输入的密码不一致");
document.forms[0].userAccountsPwd.value="";
document.forms[0].userAccountsPwdOK.value="";
document.forms[0].userAccountsPwd.focus();
}
}

最后在确认密码框的失去焦点去调用就好了onblur="comparePwd();"