Выдвигающаяся из значка форма поиска на сайте

 

Html

<div id="sb-search" class="sb-search">
    <form>
        <input class="sb-search-input" placeholder="Что будем искать?" type="text" value="" name="search" id="search">
        <input class="sb-search-submit" type="submit" value="">
        <span class="sb-icon-search"></span>
    </form>
</div>

Css

@font-face {
    font-family: 'icomoon';
    src:url('fonts/icomoon.eot');
    src:url('fonts/icomoon.eot?#iefix') format('embedded-opentype'),
        url('fonts/icomoon.woff') format('woff'),
        url('fonts/icomoon.ttf') format('truetype'),
        url('fonts/icomoon.svg#icomoon') format('svg');
    font-weight: normal;
    font-style: normal;
}

.sb-search {
    position: relative;
    margin-top: 10px;
    width: 0%;
    min-width: 60px;
    height: 60px;
    float: right;
    overflow: hidden;
    -webkit-transition: width 0.3s;
    -moz-transition: width 0.3s;
    transition: width 0.3s;
    -webkit-backface-visibility: hidden;
}

.sb-search-input {
    position: absolute;
    top: 0;
    right: 0;
    border: none;
    outline: none;
    background: #fff;
    width: 100%;
    height: 60px;
    margin: 0;
    z-index: 10;
    padding: 20px 65px 20px 20px;
    font-family: inherit;
    font-size: 20px;
    color: #2c3e50;
}

.sb-search-input::-webkit-input-placeholder {
    color: #efb480;
}

.sb-search-input:-moz-placeholder {
    color: #efb480;
}

.sb-search-input::-moz-placeholder {
    color: #efb480;
}

.sb-search-input:-ms-input-placeholder {
    color: #efb480;
}

.sb-icon-search,
.sb-search-submit  {
    width: 60px;
    height: 60px;
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    padding: 0;
    margin: 0;
    line-height: 60px;
    text-align: center;
    cursor: pointer;
}

.sb-search-submit {
    background: #fff; /* для IE */
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; /* IE 8 */
    filter: alpha(opacity=0); /* IE 5-7 */
    opacity: 0;
    color: transparent;
    border: none;
    outline: none;
    z-index: -1;
}

.sb-icon-search {
    color: #fff;
    background: #e67e22;
    z-index: 90;
    font-size: 22px;
    font-family: 'icomoon';
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    -webkit-font-smoothing: antialiased;
}

.sb-icon-search:before {
    content: "\e000";
}

.sb-search.sb-search-open,
.no-js .sb-search {
    width: 100%;
}

.sb-search.sb-search-open .sb-icon-search,
.no-js .sb-search .sb-icon-search {
    background: #da6d0d;
    color: #fff;
    z-index: 11;
}

.sb-search.sb-search-open .sb-search-submit,
.no-js .sb-search .sb-search-submit {
    z-index: 90;
}

Javascript

<script src="js/classie.js"></script>
<script src="js/uisearch.js"></script>
<script>
    new UISearch( document.getElementById( 'sb-search' ) );
</script>

содержимое файлов

classie.js

/*!
 * classie - class helper functions
 * from bonzo https://github.com/ded/bonzo
 *
 * classie.has( elem, 'my-class' ) -> true/false
 * classie.add( elem, 'my-new-class' )
 * classie.remove( elem, 'my-unwanted-class' )
 * classie.toggle( elem, 'my-class' )
 */

/*jshint browser: true, strict: true, undef: true */
/*global define: false */

( function( window ) {

'use strict';

// class helper functions from bonzo https://github.com/ded/bonzo

function classReg( className ) {
  return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
}

// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;

if ( 'classList' in document.documentElement ) {
  hasClass = function( elem, c ) {
    return elem.classList.contains( c );
  };
  addClass = function( elem, c ) {
    elem.classList.add( c );
  };
  removeClass = function( elem, c ) {
    elem.classList.remove( c );
  };
}
else {
  hasClass = function( elem, c ) {
    return classReg( c ).test( elem.className );
  };
  addClass = function( elem, c ) {
    if ( !hasClass( elem, c ) ) {
      elem.className = elem.className + ' ' + c;
    }
  };
  removeClass = function( elem, c ) {
    elem.className = elem.className.replace( classReg( c ), ' ' );
  };
}

function toggleClass( elem, c ) {
  var fn = hasClass( elem, c ) ? removeClass : addClass;
  fn( elem, c );
}

var classie = {
  // full names
  hasClass: hasClass,
  addClass: addClass,
  removeClass: removeClass,
  toggleClass: toggleClass,
  // short names
  has: hasClass,
  add: addClass,
  remove: removeClass,
  toggle: toggleClass
};

// transport
if ( typeof define === 'function' && define.amd ) {
  // AMD
  define( classie );
} else {
  // browser global
  window.classie = classie;
}

})( window );

uisearch.js

/**
 * uisearch.js v1.0.0
 * http://www.codrops.com
 *
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2013, Codrops
 * http://www.codrops.com
 */
;( function( window ) {
    
    'use strict';
    
    // EventListener | @jon_neal | //github.com/jonathantneal/EventListener
    !window.addEventListener && window.Element && (function () {
       function addToPrototype(name, method) {
          Window.prototype[name] = HTMLDocument.prototype[name] = Element.prototype[name] = method;
       }
    
       var registry = [];
    
       addToPrototype("addEventListener", function (type, listener) {
          var target = this;
    
          registry.unshift({
             __listener: function (event) {
                event.currentTarget = target;
                event.pageX = event.clientX + document.documentElement.scrollLeft;
                event.pageY = event.clientY + document.documentElement.scrollTop;
                event.preventDefault = function () { event.returnValue = false };
                event.relatedTarget = event.fromElement || null;
                event.stopPropagation = function () { event.cancelBubble = true };
                event.relatedTarget = event.fromElement || null;
                event.target = event.srcElement || target;
                event.timeStamp = +new Date;
    
                listener.call(target, event);
             },
             listener: listener,
             target: target,
             type: type
          });
    
          this.attachEvent("on" + type, registry[0].__listener);
       });
    
       addToPrototype("removeEventListener", function (type, listener) {
          for (var index = 0, length = registry.length; index < length; ++index) {
             if (registry[index].target == this && registry[index].type == type && registry[index].listener == listener) {
                return this.detachEvent("on" + type, registry.splice(index, 1)[0].__listener);
             }
          }
       });
    
       addToPrototype("dispatchEvent", function (eventObject) {
          try {
             return this.fireEvent("on" + eventObject.type, eventObject);
          } catch (error) {
             for (var index = 0, length = registry.length; index < length; ++index) {
                if (registry[index].target == this && registry[index].type == eventObject.type) {
                   registry[index].call(this, eventObject);
                }
             }
          }
       });
    })();

    // http://stackoverflow.com/a/11381730/989439
    function mobilecheck() {
        var check = false;
        (function(a){if(/(android|ipad|playbook|silk|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
        return check;
    }
    
    // http://www.jonathantneal.com/blog/polyfills-and-prototypes/
    !String.prototype.trim && (String.prototype.trim = function() {
        return this.replace(/^\s+|\s+$/g, '');
    });

    function UISearch( el, options ) {    
        this.el = el;
        this.inputEl = el.querySelector( 'form > input.sb-search-input' );
        this._initEvents();
    }

    UISearch.prototype = {
        _initEvents : function() {
            var self = this,
                initSearchFn = function( ev ) {
                    ev.stopPropagation();
                    // trim its value
                    self.inputEl.value = self.inputEl.value.trim();
                    
                    if( !classie.has( self.el, 'sb-search-open' ) ) { // open it
                        ev.preventDefault();
                        self.open();
                    }
                    else if( classie.has( self.el, 'sb-search-open' ) && /^\s*$/.test( self.inputEl.value ) ) { // close it
                        ev.preventDefault();
                        self.close();
                    }
                }

            this.el.addEventListener( 'click', initSearchFn );
            this.el.addEventListener( 'touchstart', initSearchFn );
            this.inputEl.addEventListener( 'click', function( ev ) { ev.stopPropagation(); });
            this.inputEl.addEventListener( 'touchstart', function( ev ) { ev.stopPropagation(); } );
        },
        open : function() {
            var self = this;
            classie.add( this.el, 'sb-search-open' );
            // focus the input
            if( !mobilecheck() ) {
                this.inputEl.focus();
            }
            // close the search input if body is clicked
            var bodyFn = function( ev ) {
                self.close();
                this.removeEventListener( 'click', bodyFn );
                this.removeEventListener( 'touchstart', bodyFn );
            };
            document.addEventListener( 'click', bodyFn );
            document.addEventListener( 'touchstart', bodyFn );
        },
        close : function() {
            this.inputEl.blur();
            classie.remove( this.el, 'sb-search-open' );
        }
    }

    // add to global namespace
    window.UISearch = UISearch;

} )( window );