JQuery + CSS3 fold the card drop-down list box to achieve the effect, jquerycss3

JQuery + CSS3 fold the card drop-down list box to achieve the effect, jquerycss3

The special effects of the jQuery drop-down list box make each item in the list as a card style. Opening and closing the item has the feeling of opening and closing the blinds. The effect is very good and I will share it with you.

Brief tutorial
HTML Structure
The list item of the special effect in the drop-down list box is created using an unordered list. The element used to switch the Open and Close statuses is a hyperlink element.

<div class="container"> <div class="card-drop">  <a class='toggle' href="#">   <i class='fa fa-suitcase'></i>    <span class='label-active'>Everyting</span>  </a>  <ul>   <li class='active'>    <a data-label="Everyting" href="#"><i class='fa fa-suitcase'></i> Everyting</a>   </li>   ......  </ul> </div></div>

CSS style
A. the toggle element is used to switch the open and closed statuses of the drop-down list. To make the effect of turning on the card when clicking, It is set with transform-style: preserve-3d; attribute. At the same time, the conversion origin transform-origin: 50% 0%; is modified ;.

.card-drop > a.toggle { position: relative; z-index: 100; -moz-backface-visibility: hidden; -webkit-backface-visibility: hidden; backface-visibility: hidden; -moz-transform-style: preserve-3d; -webkit-transform-style: preserve-3d; transform-style: preserve-3d; -moz-transform-origin: 50% 0%; -ms-transform-origin: 50% 0%; -webkit-transform-origin: 50% 0%; transform-origin: 50% 0%; -moz-transition: linear 0.1s; -o-transition: linear 0.1s; -webkit-transition: linear 0.1s; transition: linear 0.1s;}       

But when it is in the active state, it will rotate along the X axis, and use the: before AND: after pseudo elements to createCorner triangle Effect.

.card-drop > a.toggle:active { -moz-transform: rotateX(60deg); -webkit-transform: rotateX(60deg); transform: rotateX(60deg);}.card-drop > a.toggle:active:after { -moz-transform: rotateX(180deg); -webkit-transform: rotateX(180deg); transform: rotateX(180deg);}.card-drop > a.toggle:before, .card-drop > a.toggle:after { content: ""; position: absolute;}.card-drop > a.toggle:before { right: 25px; top: 50%; margin-top: -2.5px; border-left: 6px solid transparent; border-right: 6px solid transparent; border-top: 6px solid rgba(0, 0, 0, 0.8);}.card-drop > a.toggle.active:before { transform: rotate(180deg);}        

When switching, the list items simply use jQuery to modify their top, width, and margin-left attributes to display and hide them. And uses transition-out as the CSS animation transition effect.

.card-drop ul { position: absolute; height: 100%; top: 0; display: block; width: 100%;}.card-drop ul li { margin: 0 auto; -moz-transition: all, ease-out 0.3s; -o-transition: all, ease-out 0.3s; -webkit-transition: all, ease-out 0.3s; transition: all, ease-out 0.3s; position: absolute; top: 0; z-index: 0; width: 100%;}.card-drop ul li a { border-top: none;}.card-drop ul li a:hover { background-color: #4aa3df; color: #f3f9fd;}.card-drop ul li.active a { color: #fff; background-color: #258cd1; cursor: default;}.card-drop ul li.closed a:hover { cursor: default; background-color: #3498db;}        

JavaScript

In jQuery code, the setClosed () function is used to close all list items, which are disabled by default.

function setClosed() {  li.each(function (index) {    $(this).css('top', index * 4).css('width', width - index * 0.5 + '%').css('margin-left', index * 0.25 + '%');  });  li.addClass('closed');  toggler.removeClass('active');}setClosed();        

Then listen to the mousedown event of the. toggle element. In this event, switch the Opening and Closing statuses of the list.

toggler.on('mousedown', function () {  var $this = $(this);  if ($this.is('.active')) {    setClosed();  } else {    $this.addClass('active');    li.removeClass('closed');    li.each(function (index) {      $(this).css('top', 60 * (index + 1)).css('width', '100%').css('margin-left', '0px');    });  }});        

Finally, when each list item is clicked, the content of the list item is moved to the first item, and the entire list is closed.

links.on('click', function (e) {  var $this = $(this), label = $this.data('label');  icon = $this.children('i').attr('class');  li.removeClass('active');  if ($this.parent('li').is('active')) {    $this.parent('li').removeClass('active');  } else {    $this.parent('li').addClass('active');  }  toggler.children('span').text(label);  toggler.children('i').removeClass().addClass(icon);  setClosed();  e.preventDefault;});        

The above are the effects of jQuery and CSS3, which are very cool drop-down list box effects.