登录判断

<script type="text/javascript">
function user_login(){
var tel = $('#LoginForm_tel').val();
var pwd = $('#LoginForm_pwd').val();
var data = {'tel':tel,'pwd':pwd};
var url = "<?=site_url('user/user_login/login')?>";
$.post(url,data,function (data){
if(data.code==200){
window.location.replace("<?=site_url()?>/user/user_main/index");
}else{
alert(data.msg);
}
},'json');
}

</script>