我正在尝试为我的登录构建一个提交表单，但我不知道为什么这个操作不起作用。有什么想法吗？
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列表项jquery
$(function() {
var $formLogin = $('#login-form');
var $formLost = $('#lost-form');
var $formRegister = $('#register-form');
var $divForms = $('#div-forms');
var $modalAnimateTime = 300;
var $msgAnimateTime = 150;
var $msgShowTime = 2000;
$（“Form”）.Submit（函数(e){e.PreventDefault（）；switch（this.id）{case“login-form”：var$lg_username=$('#login_username').val（）；var$lg_password=$('#login_password').val()；如果($lg_username==“error”）{msgChange($('#div-login-msg'),$('#icon-login-msg'),$('#text-login-msg'),“error”,“glyphicon-remove”,“login error”）；}else{msgChange($('#div-login-msg'),$('#icon-login-msg'),$('#text-login-msg'),$('#text-login-msg'),断裂；大小写“lost-form”：var$ls_email=$('#lost_email').val()；如果($ls_email==“error”）{msgChange($('#div-lost-msg'),$('#icon-lost-msg'),$('#text-lost-msg'),“glyphicon-remove”,“send error”）；}else{msgChange($('#div-lost-msg'),$('#icon-lost-msg'),$('#text-lost-msg'),$('#text-lost-msg'),$('#text-lost-msg')断裂；大小写“register-form”：var$rg_username=$('#register_username').val()；var$rg_email=$('#register_email').val()；var$rg_password=$('#register_password').val()；如果($rg_username==“error”）{msgChange($('#div-register-msg'),$('#icon-register-msg'),$('#text-register-msg'),“error”,“glyphicon-remove”,“register error”）；}else{msgChange($('#div-register-msg'),$('#icon-register-msg'),$('#text-register-msg'),$('#text-register-msg'),断裂；默认：返回false；}返回false；}）；
$('#login_register_btn').click( function () { modalAnimate($formLogin, $formRegister) });
$('#register_login_btn').click( function () { modalAnimate($formRegister, $formLogin); });
$('#login_lost_btn').click( function () { modalAnimate($formLogin, $formLost); });
$('#lost_login_btn').click( function () { modalAnimate($formLost, $formLogin); });
$('#lost_register_btn').click( function () { modalAnimate($formLost, $formRegister); });
$('#register_lost_btn').click( function () { modalAnimate($formRegister, $formLost); });
function modalAnimate ($oldForm, $newForm) {
var $oldH = $oldForm.height();
var $newH = $newForm.height();
$divForms.css("height",$oldH);
$oldForm.fadeToggle($modalAnimateTime, function(){
$divForms.animate({height: $newH}, $modalAnimateTime, function(){
$newForm.fadeToggle($modalAnimateTime);
});
});
}
function msgFade ($msgId, $msgText) {
$msgId.fadeOut($msgAnimateTime, function() {
$(this).text($msgText).fadeIn($msgAnimateTime);
});
}
function msgChange($divTag, $iconTag, $textTag, $divClass, $iconClass, $msgText) {
var $msgOld = $divTag.text();
msgFade($textTag, $msgText);
$divTag.addClass($divClass);
$iconTag.removeClass("glyphicon-chevron-right");
$iconTag.addClass($iconClass + " " + $divClass);
setTimeout(function() {
msgFade($textTag, $msgOld);
$divTag.removeClass($divClass);
$iconTag.addClass("glyphicon-chevron-right");
$iconTag.removeClass($iconClass + " " + $divClass);
}, $msgShowTime);
}
}）；
列表项html
<!-- Begin # DIV Form -->
<div id="div-forms">
<!-- Begin # Login Form -->
<form id="login-form" method="post" action="login.php">
<div class="modal-body">
<div id="div-login-msg">
<div id="icon-login-msg" class="glyphicon glyphicon-chevron-right"></div>
<span id="text-login-msg">Type your username and password.</span>
</div>
<input id="login_username" class="form-control" type="text" placeholder="Username (type ERROR for error effect)" required>
<input id="login_password" class="form-control" type="password" placeholder="Password" required>
<div class="checkbox">
<label>
<input type="checkbox"> Remember me
</label>
</div>
</div>
<div class="modal-footer">
<div>
<button type="submit" name="login" class="btn btn-primary btn-lg btn-block">Login</button>
</div>
<div>
<button id="login_lost_btn" type="button" class="btn btn-link">Lost Password?</button>
<button id="login_register_btn" type="button" class="btn btn-link">Register</button>
</div>
</div>
</form>
<!-- End # Login Form -->
<!-- Begin | Lost Password Form -->
<form id="lost-form" style="display:none;" method="post" action="submit.php">
<div class="modal-body">
<div id="div-lost-msg">
<div id="icon-lost-msg" class="glyphicon glyphicon-chevron-right"></div>
<span id="text-lost-msg">Type your e-mail.</span>
</div>
<input id="lost_email" class="form-control" type="text" placeholder="E-Mail (type ERROR for error effect)" required>
</div>
<div class="modal-footer">
<div>
<button type="submit" name="submit" class="btn btn-primary btn-lg btn-block">Send</button>
</div>
<div>
<button id="lost_login_btn" type="button" class="btn btn-link">Log In</button>
<button id="lost_register_btn" type="button" class="btn btn-link">Register</button>
</div>
</div>
</form>
<!-- End | Lost Password Form -->
<!-- Begin | Register Form -->
<form id="register-form" style="display:none;" method="post" action="submit.php">
<div class="modal-body">
<div id="div-register-msg">
<div id="icon-register-msg" class="glyphicon glyphicon-chevron-right"></div>
<span id="text-register-msg">Register an account.</span>
</div>
<input id="register_username" class="form-control" type="text" placeholder="Username (type ERROR for error effect)" required>
<input id="register_email" class="form-control" type="text" placeholder="E-Mail" required>
<input id="register_password" class="form-control" type="password" placeholder="Password" required>
</div>
<div class="modal-footer">
<div>
<button type="submit" name="submit" class="btn btn-primary btn-lg btn-block">Register</button>
</div>
<div>
<button id="register_login_btn" type="button" class="btn btn-link">Log In</button>
<button id="register_lost_btn" type="button" class="btn btn-link">Lost Password?</button>
</div>
</div>
</form>
<!-- End | Register Form -->
</div>
<!-- End # DIV Form -->
</div>
</div>
</div>
在运行自定义代码之前，必须阻止表单首先提交，否则表单将在代码运行之前提交。这可以通过使用e.preventdefault()来完成。例如：
$("form").submit(function (e) {
e.preventDefault();
...
}
