CODEWITHSUNDEEP
phpjqueryfilefilereader
sradha
sradha

Reputation: 2244

Image width and height is not coming in jQuery

I have to get the image width and height using jQuery ,but i stucked here. Here image width and height is showing undefined ,please suggest me. Thank you for any suggestion.

Below is code.

$(document).ready(function () {
  $("#file").change(function () {
      var files = this.files[0];
      var reader = new FileReader();
      var img = new Image();
      reader.onload = function (e) {
        img.src = e.target.result;
        var fileSize = Math.round(files.size / 1024);///output is coming.
        alert("File size is " + fileSize + " kb");
        alert("width=" + this.width + " height=" + this.height);//showing undefined
      };
      reader.readAsDataURL(files);
  });
});

<input type="file" class="cropit-image-input hii" id="file" style="display: none;" >

Upvotes: 2

Views: 76

Answers (2)

Nana Partykar
Nana Partykar

Reputation: 10548

I Checked in my desktop.

When I changed this.width & this.height to img.width & img.height respectively. It worked.

Change

alert("width=" + this.width + " height=" + this.height);//showing undefined

To

alert("width=" + img.width + " height=" + img.height);//showing undefined

Upvotes: 1

Satpal
Satpal

Reputation: 133453

You can use img instead of this.

 alert("width=" + img.width + " height=" + img.height); 


$(document).ready(function() {
  $("#file").change(function() {
    var files = this.files[0];
    var reader = new FileReader();
    var img = new Image();
    reader.onload = function(e) {
      img.src = e.target.result;
      var fileSize = Math.round(files.size / 1024); ///output is coming.
      alert("File size is " + fileSize + " kb");
 
      alert("width=" + img.width + " height=" + img.height); //showing undefined

    };
    reader.readAsDataURL(files);

  });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="file" class="cropit-image-input hii" id="file">

Upvotes: 2

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