<script src=".0.3/jquery.min.js"></script>
<img src=".thekitchenwhisperer/wp-content/uploads/2014/04/BelgianWaffles8.jpg" width="100" class="image" />

<script>
  $(document).ready(function() {
    $('.image').click(function() {
      $(this).css('width', '100%'); // original width is 500px 
    });
  });
</script>

<script src="https://cdnjs.cloudflare./ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<img src="https://i0.wp./www.thekitchenwhisperer/wp-content/uploads/2014/04/BelgianWaffles8.jpg" width="100" class="image" />

<script>
  $(document).ready(function() {
    $('.image').click(function() {
      $(this).css('width', '100%'); // original width is 500px 
    });
  });
</script>

How do add some codes so that i click it again, it goes back to the previous width(100px)?

• javascript
• jquery
• css
• function
• click

2 Answers 2

Like this?

 $(document).ready(function(){
        $('.image').click(function(){
             $(this).css('width', function(_ , cur){
                  return cur === '100px' ? '100%' : '100px'
            });  
        });
    });

Fiddle

First of all I would replace the width attribute for your img with CSS. Next up you can just remove the assigned inline-css (which is what jQuery adds) by calling

$(this).css('width', '');