我必须为网站制作一个多步骤表单。我使用过 HTML、CSS 和 JS，但 JS 似乎不起作用。“下一步”按钮根本不起作用。在网站上，所有问题都一起出现，但我必须做一些不同的事情。“下一步”按钮必须在按下时让其他问题出现，但不是那样的。
你能帮助我吗？也许我以破旧的方式包含了 js？
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Richiedi qui il tuo preventivo</h4>
</div>
<div class="modal-body">
<div class="top-content">
<div class="inner-bg">
<div class="container">
<div class="row">
<div class="col-sm-5">
<div class="description">
</div>
</div>
</div>
<div class="row">
<div class="col-sm-5 form-box">
<form role="form" action="" method="post" class="registration-form">
<fieldset>
<div class="form-top">
<div class="form-top-left">
<h3>Parte 1</h3>
<p>Racontati chi sei:</p>
</div>
<div class="form-top-right">
<i class="fa fa-user"></i>
</div>
</div>
<div class="form-bottom">
<div class="form-group">
<label class="sr-only" for="form-first-name">Nome</label>
<input type="text" name="form-first-name" placeholder="Nome" class="form-first-name form-control" id="form-first-name">
</div>
<div class="form-group">
<label class="sr-only" for="form-last-name">Cognome</label>
<input type="text" name="form-last-name" placeholder="Cognome" class="form-last-name form-control" id="form-last-name">
</div>
<div class="form-group">
<label class="sr-only" for="form-about-yourself">Nome della tua attività</label>
<textarea name="form-about-yourself" placeholder="Nome della tua attività"
class="form-about-yourself form-control" id="form-about-yourself"></textarea>
</div>
<button type="button" class="btn btn-next">Avanti</button>
</div>
</fieldset>
<fieldset>
<div class="form-top">
<div class="form-top-left">
<h3>Parte 2</h3>
<p>Le tue informazioni di contatto:</p>
</div>
<div class="form-top-right">
<i class="fa fa-key"></i>
</div>
</div>
<div class="form-bottom">
<div class="form-group">
<label class="sr-only" for="form-email">Email</label>
<input type="text" name="form-email" placeholder="Email" class="form-email form-control" id="form-email">
</div>
<div class="form-group">
<label class="sr-only" for="form-number">Numero di telefono</label>
<input type="number" name="form-number" placeholder="Numero di telefono" class="form-password form-control" id="form-password">
</div>
<!--<div class="form-group">
<label class="sr-only" for="form-repeat-password">Repeat password</label>
<input type="password" name="form-repeat-password" placeholder="Repeat password..."
class="form-repeat-password form-control" id="form-repeat-password">
</div>-->
<button type="button" class="btn btn-previous">Indietro</button>
<button type="button" class="btn btn-next">Avanti</button>
</div>
</fieldset>
<fieldset>
<div class="form-top">
<div class="form-top-left">
<h3>Parte 3</h3>
<p>Dobbiamo avere ancora qualche informazione prima di calcolare il tuo preventivo:</p>
</div>
</div>
<div class="form-bottom">
<div class="form-group">
<label class="sr-only" for="form-number">Quante persone servi al giorno?</label>
<input type="text" name="form-facebook" placeholder="Numero" class="form-facebook form-control" id="form-question">
</div>
<div class="form-group">
<label class="sr-only" for="form-question">Compri bottiglie di plastica o di vetro?</label>
<input type="text" name="form-twitter" placeholder="Bottiglie di plastica o di vetro?" class="form-question form-control" id="form-question">
</div>
<button type="button" class="btn btn-previous">Indietro</button>
<button type="submit" class="btn">Calcola!</button>
</div>
</fieldset>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
+function($) {
'use strict';
var modals = $('.modal.multi-step');
modals.each(function(idx, modal) {
var $modal = $(modal);
var $bodies = $modal.find('div.modal-body');
var total_num_steps = $bodies.length;
var $progress = $modal.find('.m-progress');
var $progress_bar = $modal.find('.m-progress-bar');
var $progress_stats = $modal.find('.m-progress-stats');
var $progress_current = $modal.find('.m-progress-current');
var $progress_total = $modal.find('.m-progress-total');
var $progress_complete = $modal.find('.m-progress-complete');
var reset_on_close = $modal.attr('reset-on-close') === 'true';
function reset() {
$modal.find('.step').hide();
$modal.find('[data-step]').hide();
}
function completeSteps() {
$progress_stats.hide();
$progress_complete.show();
$modal.find('.progress-text').animate({
top: '-2em'
});
$modal.find('.complete-indicator').animate({
top: '-2em'
});
$progress_bar.addClass('completed');
}
function getPercentComplete(current_step, total_steps) {
return Math.min(current_step / total_steps * 100, 100) + '%';
}
function updateProgress(current, total) {
$progress_bar.animate({
width: getPercentComplete(current, total)
});
if (current - 1 >= total_num_steps) {
completeSteps();
} else {
$progress_current.text(current);
}
$progress.find('[data-progress]').each(function() {
var dp = $(this);
if (dp.data().progress <= current - 1) {
dp.addClass('completed');
} else {
dp.removeClass('completed');
}
});
}
function goToStep(step) {
reset();
var to_show = $modal.find('.step-' + step);
if (to_show.length === 0) {
// at the last step, nothing else to show
return;
}
to_show.show();
var current = parseInt(step, 10);
updateProgress(current, total_num_steps);
findFirstFocusableInput(to_show).focus();
}
function findFirstFocusableInput(parent) {
var candidates = [parent.find('input'), parent.find('select'),
parent.find('textarea'),parent.find('button')],
winner = parent;
$.each(candidates, function() {
if (this.length > 0) {
winner = this[0];
return false;
}
});
return $(winner);
}
function bindEventsToModal($modal) {
var data_steps = [];
$('[data-step]').each(function() {
var step = $(this).data().step;
if (step && $.inArray(step, data_steps) === -1) {
data_steps.push(step);
}
});
$.each(data_steps, function(i, v) {
$modal.on('next.m.' + v, {step: v}, function(e) {
goToStep(e.data.step);
});
});
}
function initialize() {
reset();
updateProgress(1, total_num_steps);
$modal.find('.step-1').show();
$progress_complete.hide();
$progress_total.text(total_num_steps);
bindEventsToModal($modal, total_num_steps);
$modal.data({
total_num_steps: $bodies.length,
});
if (reset_on_close){
//Bootstrap 2.3.2
$modal.on('hidden', function () {
reset();
$modal.find('.step-1').show();
})
//Bootstrap 3
$modal.on('hidden.bs.modal', function () {
reset();
$modal.find('.step-1').show();
})
}
}
initialize();
})
}(jQuery);