function checkUsername(){
var username = $F("username");
if(username=="")
{
var divid = "check_username";
$(divid).innerHTML= '
请填写用户名';
return;
}
var divid = "check_username";
$(divid).innerHTML= ' 正在检查...';
checkUsernameIsExists($F("username"));
}
function resetCheck(){
var divid = "check_username";
$(divid).innerHTML= '检查用户名是否可用';
}
function checkUsernameIsExists(username) {
LoadBar.show('检查用户名是否可用...');
var url='/ajax/user/reg/check_username.jsp';
var pars='username='+encodeURIComponent(encodeURIComponent(username));
var myAjax=new Ajax.Request(url,{method:'post',parameters:pars,onComplete:doneUsernameIsExists});
}
function doneUsernameIsExists(req){
var exists = req.responseText;
if(exists=="")
exists = 0;
if(exists==0)
{
var divid = "check_username";
$(divid).innerHTML= '
该用户名可用';
}else if(exists==-1)
{
var divid = "check_username";
$(divid).innerHTML= ' 用户名不能为数字';
}
else
{
var divid = "check_username";
$(divid).innerHTML= ' 该用户名已注册过';
}
setTimeout(LoadBar.hide,500);
}