为什么小弟我要点击两次才能提交呢？usernameFlag值要如何放才好
为什么我要点击两次才能提交呢？usernameFlag值要怎么放才好？
这逻辑哪里出了毛病？？帮忙调调~~
c.html就一个字：0
------解决思路----------------------
$.ajax({
type:"post",
url:"c.html",
async:false,
data:{uname:uname},
success:function(result){
if(result=="1"){
console.log("已存在")
return false;
}else{
console.log("可用");
usernameFlag=true;
}
}
})
这逻辑哪里出了毛病？？帮忙调调~~
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>表单</title>
</head>
<body>
<form action="a.html" method="post" onsubmit="return tijiao()">
<input type="text" name="realname" maxlength="7">
<input type="submit" value="提交" />
</form>
<script src="http://libs.useso.com/js/jquery/1.7/jquery.min.js"></script>
<script type="text/javascript">
var usernameFlag=false;
function checkUserName(o){
var objname=o.attr("name");
var uname =o.val();
//输入s
var re=/s/;
if(!re.test(uname)){
return false;
}else{
$.ajax({
type:"post",
url:"c.html",
data:{uname:uname},
success:function(result){
if(result=="1"){
console.log("已存在")
return false;
}else{
console.log("可用");
usernameFlag=true;
}
}
})
}
return usernameFlag;
}
function tijiao(){
var $realname=$("input[name='realname']");
if(!checkUserName($realname)){
return false;
}else{
return true;
}
}
</script>
</body>
</html>
c.html就一个字：0
------解决思路----------------------
$.ajax({
type:"post",
url:"c.html",
async:false,
data:{uname:uname},
success:function(result){
if(result=="1"){
console.log("已存在")
return false;
}else{
console.log("可用");
usernameFlag=true;
}
}
})