1Basic Syntax:
2$(element).removeClass( "myClass yourClass" )
3-------------------------------------------------------------------------------------
4  
5Html code example:
6<p class="red highlight">test1</p>
7<p class="red highlight marked">test2</p>
8<p class="red highlight">test3</p>
9<p class="red highlight">test4</p>
10
11// remove all highlight class from p tag
12<script>
13	$( "p" ).removeClass( "highlight" )
14</script>
15
16// output after execution of this code
17<p class="red">test1</p>
18<p class="red marked">test2</p>
19<p class="red">test3</p>
20<p class="red">test4</p>
21

1//Remove this same line after copying
2Basic Syntax:
3$(element).removeClass( "myClass yourClass" )
4-------------------------------------------------------------------------------------
5  
6Html code example:
7<p class="red highlight">test1</p>
8<p class="red highlight marked">test2</p>
9<p class="red highlight">test3</p>
10<p class="red highlight">test4</p>
11
12// remove all highlight class from p tag
13<script>
14	$( "p" ).removeClass( "highlight" )
15</script>
16
17// output after execution of this code
18<p class="red">test1</p>
19<p class="red marked">test2</p>
20<p class="red">test3</p>
21<p class="red">test4</p>

1$( "#foo" ).toggleClass( 'className', addOrRemoveOptional );
2
3//OR
4if ($( "#foo" ).hasClass('className')) {
5	$( "#foo" ).removeClass( 'className');
6} else {
7  $( "#foo" ).addClass( 'className');
8}
9

1$( "p" ).addClass( "myClass yourClass" );
2

1$("button").click(function(){
2  $("p").removeClass("intro");
3 });
4//Html code example:
5<p class="red highlight">test1</p>
6<p class="red highlight marked">test2</p>
7<p class="red highlight">test3</p>
8<p class="red highlight">test4</p>
9
10// remove all highlight class from p tag
11<script>
12	$( "p" ).removeClass( "highlight" )
13</script>
14// example $(element).removeClass( "myClass yourClass" )

1$('#toggle li').on('click', function () {
2    $(this).toggleClass('open')
3});