Resize an image using JavaScript / jQuery

Question

I know this question has been answered many times. However, my code does not seem to work despite I literally got it from the internet. I probably do something wrong, but what exactly I could not figure out.

I put the following JS code inside the HTML <head> tag :

$(document).ready(function() {
  var imwidth = $('#jspp').width(); 
  var imheight = $('#jspp').height(); 
  if (imwidth < imheight) {
   $('#jspp').width(100);
  } else {
   $('#jspp').height(100);
  }	 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
  <div>
    <img id="jspp" src="https://placehold.it/300x300">
  </div>
</body>

Does somebody have an idea of what could be wrong?

Thanks in advance!

You're missing a ')' at the end of your jQuery. Check your console.log for errors. — MCMXCII
– MCMXCII, Commented Oct 16, 2017 at 16:49
Don't assume everything you copy straight from the internet is correct and valid :) — FluffyKitten
– FluffyKitten, Commented Oct 16, 2017 at 16:53
@FluffyKitten hahah, unless you're a beginner like me I guess — Matthias
– Matthias, Commented Oct 16, 2017 at 16:54
If it's still not working, make sure you are including jQuery. Have you got any errors in your console? — MCMXCII
– MCMXCII, Commented Oct 16, 2017 at 16:55

Shiladitya · Accepted Answer · 2017-10-16 16:53:41Z

1

Here you go with a solution https://jsfiddle.net/027q85w8/

$(document).ready(function() {
  var imwidth = $('#jspp').width(); 
  var imheight = $('#jspp').height(); 

  if (imwidth < imheight) {
    $('#jspp').css('width', '100px');
  } else {
    $('#jspp').css('height', '100px');
  }   
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
  <img id="jspp" src="http://via.placeholder.com/350x150">
</div>

Two things were wrong in your code.

Missing ) at the end of document.ready
Assigning of 100px in width & height.

Hope this will help you.

answered Oct 16, 2017 at 16:53

Shiladitya

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