Rotating an element with JQuery

Question

Rotating an element with JQuery

I am creating a basic layout to test my knowledge. I am creating a menu and I decided to customize it. I want to rotate 90 degrees an icon composed of three vertical lines every time users click on it (this icon only shows when the page is discarded on @media smartphones (max-size: 968px). This icon shows the menu when it is I have read how to do this by googling too, but I haven’t found the answer yet. Should I use css or animate? Can I reach the target with the rotate method? Can you show me the correct path? I don’t understand how use them to rotate the icon.

$(function(){
  var degree = 45;
    var $buttonNav = $('.header__icon-bar');
  $buttonNav.on('click', function(e){
    e.preventDefault();
    $('.header__nav').toggleClass('is-open');
  });//end of $buttonNav
});//end of the start

/*----------
GENERAL
-----------*/
html,body { height: 100%; width: 100%;margin: 0; padding: 0;}

body{  background: #eee; }


/*----------
HEADER
-----------*/
.header__nav{  display: block; float: right; margin: 0; padding: 20px; background: #333; margin-top: 50px;}
.header__nav__item{ display: inline-block; margin: 0; }
.header__nav__item a {padding: 30px; padding: 20px; margin: 0; color: white; text-decoration: none;}
.header__nav__item a:hover { background: #ff3333; }






/*----------
icon-bar
-----------*/
.header__icon-bar{ margin: 0; padding: 10px; background-color: #333; float: left; display: none;}
.header__icon-bar span { padding: 3px 1px; margin: 3px ; background-color: white;}
.header__background{display: none; height: 0px; background-color: #333; margin: 0;}

@media(max-width: 960px) {
  /*header-Menu*/
.header{ width: 100%; padding: 0; margin: 0;}
.header__nav{ width: 100%; overflow: hidden; height: 0px; margin: 0; padding: 0;  mar}
.header__nav__item { display: block; padding: 20px; margin: 0;}
.header__nav__item a{ width: 100%;padding-right: 100%;}

.is-open{ display: block; height: 255px; background: #333; display: block; margin: 0;}

/*button of spaun menu(nav)*/
.header__icon-bar{ display: block;margin-top: 10px; margin-left: 10px; float: left;}
.header__background{display: block; background-color:#333; height: 60px; width: 100%}





}

























*/
/*----------
CLEARFIX
-----------*/
.clearfix:after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: " ";
  clear: both;
  height: 0;
}
* html .clearfix             { zoom: 1; } /* IE6 */
*:first-child+html .clearfix { zoom: 1; } /* IE7 */

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header class="header clearfix">
   <div class="header__background">

   <a class="header__icon-bar" href="">
      <span></span>
      <span></span>
      <span></span>
  </a>
</div>


    <ul class="header__nav">
      <li class="header__nav__item">  <a href="#"> Home    </a> </li>
      <li class="header__nav__item">  <a href="#"> Contact </a>    </li>
      <li class="header__nav__item">  <a href="#"> Apply   </a>    </li>
      <li class="header__nav__item">  <a href="#"> About   </a>    </li>
    </ul>


 </header>

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+3

javascript jquery html css web

Roberto 11 Apr 17 at 15:02

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4 answers

CSS Transform can do what you need. Make a class for each transformation "state". Change the classes to change state. If there are two states, there will be a normal state and a rotated state. When the user clicks on 3 lines, the class changes from a normal state to a rotated state. You will need an onclick event to check if the img click has a normal class or a rotated class.

if($('this').attr('class')=='normal'){
         ///switch to rotated class
}

Executes an else if counter if the image is already rotated.

if($('this').attr('class')=='rotatedl'){
     ///switch to normal class
}

ps classes will call the generated transform keyframe! You must create a keyframe transformation animation before you can call the class that uses it.

https://www.w3schools.com/cssref/css3_pr_transform.asp

+2

Tim hunt 11 Apr 17 at 15:11

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$(function(){
  var degree = 45;
    var $buttonNav = $('.header__icon-bar');
  $buttonNav.on('click', function(e){
    e.preventDefault();
    $('.header__nav').toggleClass('is-open');
    if( $('.header__nav').hasClass('is-open')){
     $('.header__icon-bar').css('transform','rotate(90deg)')
    }else{
     $('.header__icon-bar').css('transform','rotate(0deg)')
    }

  });//end of $buttonNav
});//end of the start

+1

Vladut 11 Apr 17 at 15:10

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you can add animation to make it smooth:

.animated {
  -webkit-animation-duration: 0.5s;
  animation-duration: 0.5s;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
}

@-webkit-keyframes rotate-right {
  from {   
    opacity: 0;
    -ms-transform: rotate(0deg); 
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  to {   
    opacity: 1;
    -ms-transform: rotate(90deg); 
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  }
}

See full demo

$(function(){
  var degree = 45;
    var $buttonNav = $('.header__icon-bar');
  $buttonNav.on('click', function(e){
    e.preventDefault();
    $('.header__nav').toggleClass('is-open');

   if($('.header__icon-bar').hasClass('rotate-right')){
     $('.header__icon-bar').removeClass('rotate-right');
     $('.header__icon-bar').toggleClass('rotate-left');
   }else{
      $('.header__icon-bar').removeClass('rotate-left');
      $('.header__icon-bar').toggleClass('rotate-right');
    }
  });//end of $buttonNav
});//end of the start

/*----------
GENERAL
-----------*/
html,body { height: 100%; width: 100%;margin: 0; padding: 0;}

body{  background: #eee; }


/*----------
HEADER
-----------*/
.header__nav{  display: block; float: right; margin: 0; padding: 20px; background: #333; margin-top: 50px;}
.header__nav__item{ display: inline-block; margin: 0; }
.header__nav__item a {padding: 30px; padding: 20px; margin: 0; color: white; text-decoration: none;}
.header__nav__item a:hover { background: #ff3333; }






/*----------
icon-bar
-----------*/
.header__icon-bar{ margin: 0; padding: 10px; background-color: #333; float: left; display: none;}
.header__icon-bar span { padding: 3px 1px; margin: 3px ; background-color: white;}
.header__background{display: none; height: 0px; background-color: #333; margin: 0;}

@media(max-width: 960px) {
  /*header-Menu*/
.header{ width: 100%; padding: 0; margin: 0;}
.header__nav{ width: 100%; overflow: hidden; height: 0px; margin: 0; padding: 0;  mar}
.header__nav__item { display: block; padding: 20px; margin: 0;}
.header__nav__item a{ width: 100%;padding-right: 100%;}

.is-open{ display: block; height: 255px; background: #333; display: block; margin: 0;}

/*button of spaun menu(nav)*/
.header__icon-bar{ display: block;margin-top: 10px; margin-left: 10px; float: left;}
.header__background{display: block; background-color:#333; height: 60px; width: 100%}





}

























*/
/*----------
CLEARFIX
-----------*/
.clearfix:after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: " ";
  clear: both;
  height: 0;
}
* html .clearfix             { zoom: 1; } /* IE6 */
*:first-child+html .clearfix { zoom: 1; } /* IE7 */

 .animated {
  -webkit-animation-duration: 0.5s;
  animation-duration: 0.5s;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
}

   @-webkit-keyframes rotate-right {
  from {   
opacity: 0;
-ms-transform: rotate(0deg); 
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
  }

  to {   
opacity: 1;
-ms-transform: rotate(90deg); 
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  }
}

@keyframes rotate-right {
   from {   
opacity: 0;
-ms-transform: rotate(0deg); 
  -webkit-transform: rotate(0deg);
  transform: rotate(0deg);
  }

  to {   
opacity: 1;
-ms-transform: rotate(90deg); 
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  }
}

.rotate-right {
  -webkit-animation-name: rotate-right;
  animation-name: rotate-right;
}


 @-webkit-keyframes rotate-left {
  from {   
opacity: 0;
-ms-transform: rotate(90deg); 
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
  }

  to {   
opacity: 1;
-ms-transform: rotate(0deg); 
  -webkit-transform: rotate(0deg);
  transform: rotate(0deg);
  }
}

@keyframes rotate-left {
   from {   
opacity: 0;
-ms-transform: rotate(90deg); 
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  }

  to {   
opacity: 1;
-ms-transform: rotate(0deg); 
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
  }
}

.rotate-left {
  -webkit-animation-name: rotate-left;
  animation-name: rotate-left;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header class="header clearfix">
   <div class="header__background">

   <a class="header__icon-bar animated" href="">
      <span></span>
      <span></span>
      <span></span>
  </a>
</div>


    <ul class="header__nav">
      <li class="header__nav__item">  <a href="#"> Home    </a> </li>
      <li class="header__nav__item">  <a href="#"> Contact </a>    </li>
      <li class="header__nav__item">  <a href="#"> Apply   </a>    </li>
      <li class="header__nav__item">  <a href="#"> About   </a>    </li>
    </ul>


 </header>

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+1

Maxim shoustin 11 Apr 17 at 15:29

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Neil · Accepted Answer · 2017-04-11T15:08:48+0000

This can be accomplished with a CSS3 transform.

$(function(){
  var degree = 45;
    var $buttonNav = $('.header__icon-bar');
  $buttonNav.on('click', function(e){
    e.preventDefault();
    $('.header__nav').toggleClass('is-open');
    $('.header__icon-bar').toggleClass('rotate90')
  });//end of $buttonNav
});//end of the start

.rotate90 {
  -ms-transform: rotate(90deg); /* IE 9 */
  -webkit-transform: rotate(90deg); /* Chrome, Safari, Opera */
  transform: rotate(90deg);
}


/*----------
GENERAL
-----------*/
html,body { height: 100%; width: 100%;margin: 0; padding: 0;}

body{  background: #eee; }


/*----------
HEADER
-----------*/
.header__nav{  display: block; float: right; margin: 0; padding: 20px; background: #333; margin-top: 50px;}
.header__nav__item{ display: inline-block; margin: 0; }
.header__nav__item a {padding: 30px; padding: 20px; margin: 0; color: white; text-decoration: none;}
.header__nav__item a:hover { background: #ff3333; }






/*----------
icon-bar
-----------*/
.header__icon-bar{ margin: 0; padding: 10px; background-color: #333; float: left; display: none;}
.header__icon-bar span { padding: 3px 1px; margin: 3px ; background-color: white;}
.header__background{display: none; height: 0px; background-color: #333; margin: 0;}

@media(max-width: 960px) {
  /*header-Menu*/
.header{ width: 100%; padding: 0; margin: 0;}
.header__nav{ width: 100%; overflow: hidden; height: 0px; margin: 0; padding: 0;  mar}
.header__nav__item { display: block; padding: 20px; margin: 0;}
.header__nav__item a{ width: 100%;padding-right: 100%;}

.is-open{ display: block; height: 255px; background: #333; display: block; margin: 0;}

/*button of spaun menu(nav)*/
.header__icon-bar{ display: block;margin-top: 10px; margin-left: 10px; float: left;}
.header__background{display: block; background-color:#333; height: 60px; width: 100%}





}

























*/
/*----------
CLEARFIX
-----------*/
.clearfix:after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: " ";
  clear: both;
  height: 0;
}
* html .clearfix             { zoom: 1; } /* IE6 */
*:first-child+html .clearfix { zoom: 1; } /* IE7 */

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header class="header clearfix">
   <div class="header__background">

   <a class="header__icon-bar" href="">
      <span></span>
      <span></span>
      <span></span>
  </a>
</div>


    <ul class="header__nav">
      <li class="header__nav__item">  <a href="#"> Home    </a> </li>
      <li class="header__nav__item">  <a href="#"> Contact </a>    </li>
      <li class="header__nav__item">  <a href="#"> Apply   </a>    </li>
      <li class="header__nav__item">  <a href="#"> About   </a>    </li>
    </ul>


 </header>

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Rotating an element with JQuery

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