javascript - JS Slide toogle sidebars out and expand content div -


i want slide out both sidebars , expand width of middle content div @ same time , on again click want toogle original.

what tried far

$('.headbar').click(function () {     $(".leftside").animate({width: 'toggle'});     $( ".rightside" ).animate({         width: "toggle"     }, 300, function() {         $(".content").animate({width: '1200px'});     }); }); 

my problems

  • headbar flashing when animation start (but guess css bug)

  • content not toggle original

my concept understanding

enter image description here

i approach using css class transition effect toggled jquery instead of using jquery animate function.

working demo:

$(document).ready(function() {      $('body').on('click', '.headbar', function(){    	$('body').toggleclass('expanded');    });      });
.headbar {    width: 100%;    background: #303030;    background-repeat: repeat;    background-size: 38px 133px;    height: 40px;    background-position: 0px 39px;    box-shadow: 0px 1px 5px;    position: fixed;    z-index: 1000;    margin-top: -40px;  }    .leftside {    position: fixed;    left: 2%;    top: 100px;    height: 500px;    width: 13%;    background-color: rgba(123, 123, 123, 0.95);  }    .rightside {    position: fixed;    right: 2%;    top: 100px;    height: 500px;    width: 13%;    background-color: rgba(123, 123, 123, 0.95);  }    .scrollable {    position: relative;    top: 20px;    min-height: 700px;    width: 70%;    margin: 0 auto;    box-shadow: 0px 1px 5px;    background: white;  }    /* ===================== */  /* expanded transition  /* ===================== */    .leftside, .rightside, .scrollable {    transition:0.3s;  }    body.expanded .scrollable {    width:100%;  }    body.expanded .leftside {    left: -100%;  }    body.expanded .rightside {    right: -100%;  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <div class="headbar"></div>  <div class="leftside"></div>  <div class="rightside"></div>  <div class="scrollable"></div>

jsfiddle


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