MultiStep Form jQuery Plugin

plug n play

by Cone

HTML

<form id="myForm" action="/register.php">
  <h1>Register:</h1>
  <!-- One "tab" for each step in the form: -->
  <div class="tab">Name:
    <p><input placeholder="First name..." name="fname"></p>
    <p><input placeholder="Last name..." name="lname"></p>
  </div>
  <div class="tab">Contact Info:
    <p><input placeholder="E-mail..." name="email"></p>
    <p><input placeholder="Phone..." name="phone"></p>
  </div>
  <div class="tab">Birthday:
    <p><input placeholder="dd" name="dd"></p>
    <p><input placeholder="mm" name="nn"></p>
    <p><input placeholder="yyyy" name="yyyy"></p>
  </div>
  <div class="tab">Login Info:
    <p><input placeholder="Username..." name="uname"></p>
    <p><input placeholder="Password..." name="pword" type="password"></p>
  </div>
  <div style="overflow:auto;">
    <div style="float:right;">
      <button type="button" class="previous">Previous</button>
      <button type="button" class="next">Next</button>
      <button type="submit">Save</button>
    </div>
  </div>
  <!-- Circles which indicates the steps of the form: -->
  <div style="text-align:center;margin-top:40px;">
    <span class="step">1</span>
    <span class="step">2</span>
    <span class="step">3</span>
    <span class="step">4</span>
  </div>
</form>

CSS

* {
  box-sizing: border-box;
}

.tab {
  display: none;
  width: 100%;
  height: 50%;
  margin: 0px auto;
}

.current {
  display: block;
}

body {
  background-color: #f1f1f1;
}

form {
  background-color: #ffffff;
  margin: 50px auto;
  font-family: Raleway;
  padding: 40px;
  width: 70%;
  min-width: 300px;
}

h1 {
  text-align: center;
}

input {
  padding: 10px;
  width: 100%;
  font-size: 17px;
  font-family: Raleway;
  border: 1px solid #aaaaaa;
}

button {
  background-color: #4CAF50;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  font-size: 17px;
  font-family: Raleway;
  cursor: pointer;
}

button:hover {
  opacity: 0.8;
}

.previous {
  background-color: #bbbbbb;
}

/* Make circles that indicate the steps of the form: */
.step {
  height: 30px;
  width: 30px;
  cursor: pointer;
  margin: 0 2px;
  color: #fff;
  background-color: #bbbbbb;
  border: none;
  border-radius: 50%;
  display: inline-block;
  opacity: 0.8;
  padding: 5px
}

.step.active {
  opacity: 1;
  background-color: #69c769;
}

.step.finish {
  background-color: #4CAF50;
}

JavaScript

$(document).ready(function() {
  $("#myForm").multiStepForm({
    // defaultStep:0,
    beforeSubmit: function() {
      console.log("save");
    }
  }).navigateTo(0);
});

/* PLUGIN CODE STARTS FROM HERE*/
(function($) {
  $.fn.multiStepForm = function(args) {
    if (args === null || typeof args !== 'object' || $.isArray(args))
      throw " : Called with Invalid argument";
    var form = this;
    var tabs = form.find('.tab');
    var steps = form.find('.step');
    steps.each(function(i, e) {
      $(e).on('click', function(ev) {
        form.navigateTo(i);
      });
    });
    form.navigateTo = function(i) {
      /*index*/
      /*Mark the current section with the class 'current'*/
      tabs.removeClass('current').eq(i).addClass('current');
      // Show only the navigation buttons that make sense for the current section:
      form.find('.previous').toggle(i > 0);
      atTheEnd = i >= tabs.length - 1;
      form.find('.next').toggle(!atTheEnd);
      // console.log('atTheEnd='+atTheEnd);
      form.find('.submit').toggle(atTheEnd);
      form.fixStepIndicator(form.curIndex());
      return form;
    }
    form.curIndex = function() {
      /*Return the current index by looking at which section has the class 'current'*/
      return tabs.index(tabs.filter('.current'));
    }
    form.fixStepIndicator = function(n) {
      steps.each(function(i, e) {
        i == n ? $(e).addClass('active') : $(e).removeClass('active');
      });
    }
    /* Previous button is easy, just go back */
    form.find('.previous').click(function() {
      form.navigateTo(form.curIndex() - 1);
    });

    /* Next button goes forward iff current block validates */
    form.find('.next').click(function() {
      if ('validations' in args && typeof args.validations === 'object' && !$.isArray(args.validations) && (!('noValidate' in args) || (typeof args.noValidate === 'boolean' && !args.noValidate))) {
        form.validate(args.validations);
        if (form.valid() == true) {
  ...