Question

jsp页面里的javascript代码无效，请问应该怎么解决

这是一个用户注册的界面，在界面里我写了下面的javascript代码，可是并没有效果，求大神指导是怎么回事
<script language="javascript">
function checkname(){
var div = document.getElementById("div1");
div.innerHTML = "";
var name1 = document.form1.text1.value;
if (name1 == "") {
div.innerHTML = "姓名不能为空！";
document.form1.text1.focus();
return false;
}
if (name1.length < 4 || name1.length > 16) {
div.innerHTML = "姓名输入的长度4-16个字符！";
document.form1.text1.select();
return false;
}
var charname1 = name1.toLowerCase();
for (var i = 0; i < name1.length; i++) {
var charname = charname1.charAt(i);
if (!(charname >= 0 && charname <= 9) && (!(charname >= 'a' && charname <= 'z')) && (charname != '_')) {
div.innerHTML = "姓名包含非法字母，只能包含字母，数字，和下划线";
document.form1.text1.select();
return false;
}
}
return true;
}
function checkpassword(){
var div = document.getElementById("div2");
div.innerHTML = "";
var password = document.form1.text2.value;
if (password == "") {
div.innerHTML = "密码不位空！";
document.form1.text2.focus();
return false;
}
if (password.length < 4 || password.length > 12) {
div.innerHTML = "密码长度4-12位";
document.form1.text2.select();
return false;
}
return true;
}
function checkrepassword(){
var div = document.getElementById("div3");
div.innerHTML = "";
var password = document.form1.text2.value;
var repass = document.form1.text3.value;
if (repass == "") {
div.innerHTML = "密码不位空！";
document.form1.text3.focus();
return false;
}
if (password != repass) {
div.innerHTML = "输入密码和确认密码长度不一致";
document.form1.text3.select();
return false;
}
return true;
}
function check(){
if (checkname() && checkpassword() && checkrepassword() && checkEmail()) {
return true;
}
else {
return false;
}
}
</script>

Answer 1

js 不太好 用jquery吧
$("#user_name").blur(function(){
var v=$("#user_name").val(),

len=v.replace(/[^\x00-\xff]/g, 'xx').length,
isName=/[^\u4e00-\u9fa50-9a-zA-Z]/ig.test(v),
isNum=/^\d+$/.test(v);
var o=$("#user_name");
if(!v){
showInfo($("#username_msg"),'用户名不能为空','err');

setTimeout(function(){o.focus()},0);

return false;
}else if(len<5||len>25){
showInfo($("#username_msg"),'5-25个字符','err');
setTimeout(function(){o.focus()},0);
return false;
}else if(isNum){
showInfo($("#username_msg"),'用户名不能以纯数字组成','err');
setTimeout(function(){o.focus()},0);
return false;
}else if(isName){
showInfo($("#username_msg"),'用户名不能有特殊字符存在','err');
setTimeout(function(){o.focus()},0);
return false;
}
/* ajax校验： */
var url="/user/register/checkuName/",
param={"user_name":v};
res=quickAjax({url:url,param:param}),
st=res.status*1;
if(st==0){
$("#is_username").val("1");
showInfo($("#username_msg"),'通过验证','ok');

}else{
showInfo($("#username_msg"),'系统内已存在相同用户名','err');
setTimeout(function(){o.focus()},0);
return false;
}
})