我创建了一个注册表单,供用户填写数据并提交注册。如果某些字段为空,用户名不可用,或者该用户的电子邮件已经注册,则在提交按钮下方出现警告,停止他们的进程,直到他们的错误被纠正。
在email
和username
输入框下方,有一个span id分别为emailstatus
和unamestatus
。如果电子邮件或用户名已经注册或不可用,则在该范围内放置一条消息通知用户。但是,无论是否显示该消息,即使用户的信息没有问题,span id status
也总是有"Please correct your errors."的消息,该消息可以在javascript函数signup()
中找到。请帮助。
<p>Enter personal details</p>
//cleaned up code
<input id="email" onfocus="emptyElement('status')" onblur="checkemail()" onkeyup="restrict('email')" maxlength="88" type="text" class="form-control" placeholder="Email"><span id="emailstatus"></span>
<input id="username" type="text" onfocus="emptyElement('status')" onblur="checkusername()" onkeyup="restrict('username')" maxlength="16" class="form-control" placeholder="User Name">
<span id="unamestatus"></span>
<button id="signupbtn" onclick="signup();" class="btn btn-lg btn-login btn-block">Create Account</button>
<span style="font-weight:bold;" id="status"></span>
Javascript:注册()
function signup(){
var u = _("username").value;
var e = _("email").value;
var status = _("status");
if(unamestatus.innerHTML.value != "" || emailstatus.innerHTML.value != ""){
status.innerHTML = "Please correct your errors.";
} else {
_("signupbtn").style.display = "none";
status.innerHTML = 'please wait ...';
var ajax = ajaxObj("POST", "registration.php");
ajax.onreadystatechange = function() {
if(ajaxReturn(ajax) == true) {
if(ajax.responseText != "signup_success"){
status.innerHTML = ajax.responseText;
_("signupbtn").style.display = "block";
location.href = "registration_success.php";
}
}
}
ajax.send("fn="+fn+"&ln="+ln+"&u="+u+"&e="+e+"&p="+p1+"&c="+c+"&g="+g);
}
}
Javascript: checkusername ()
function checkusername(){
var u = _("username").value;
if(u != ""){
//_("unamestatus").innerHTML = 'checking ...';
var ajax = ajaxObj("POST", "registration.php");
ajax.onreadystatechange = function() {
if(ajaxReturn(ajax) == true) {
_("unamestatus").innerHTML = ajax.responseText;
}
}
ajax.send("usernamecheck="+u);
}
}
Javascript: checkemail ()
function checkemail(){
var e = _("email").value;
if(e != ""){
//_("emailstatus").innerHTML = 'checking ...';
var ajax = ajaxObj("POST", "registration.php");
ajax.onreadystatechange = function() {
if(ajaxReturn(ajax) == true) {
_("emailstatus").innerHTML = ajax.responseText;
}
}
ajax.send("emailcheck="+e);
}
}
你的问题在这里:
} else if(unamestatus.innerHTML.value != "" || emailstatus.innerHTML.value != ""){
status.innerHTML = "Please correct your errors.";
}
innerHTML
没有value
属性。使用
} else if(unamestatus.innerHTML != "" || emailstatus.innerHTML != ""){
status.innerHTML = "Please correct your errors.";
}