ArticleZip > Jquery Width And Height Return 0 For Img Element

Jquery Width And Height Return 0 For Img Element

One common issue software engineers encounter when working with jQuery is receiving a width or height value of 0 for an img element, even when the image has been properly loaded. This problem can seem frustrating, but fortunately, there are simple solutions you can implement to resolve it.

The reason why jQuery might return 0 for the width and height of an img element is that the script is trying to retrieve these values before the image content has fully loaded. When this happens, jQuery fetches the dimensions of the element before the browser has had a chance to download and render the image itself.

To tackle this problem, you can employ the use of the `$(window).on('load', function(){})` method. This method ensures that the code inside the function will only run once the entire window, including all images, has finished loading. By placing your width and height retrieval code within this function, you can be certain that the image has loaded completely, and accurate dimensions will be provided.

Javascript

$(window).on('load', function(){
  let imgWidth = $('#yourImgElement').width();
  let imgHeight = $('#yourImgElement').height();
  
  // Now you can use imgWidth and imgHeight with the correct values
});

Another approach you can take is to explicitly check if the image has finished loading using the `complete` property of the image element. This property is set to true when the image has been fully loaded by the browser.

Javascript

$(document).ready(function(){
  let img = document.getElementById('yourImgElement');
  
  if (img.complete) {
    let imgWidth = $('#yourImgElement').width();
    let imgHeight = $('#yourImgElement').height();
  
    // Proceed with using the correct width and height values
  } else {
    img.onload = function() {
      let imgWidth = $('#yourImgElement').width();
      let imgHeight = $('#yourImgElement').height();

      // Continue with using the correct dimensions
    }
  }
});

By checking the `complete` property and utilizing the `onload` event handler, you can ensure that accurate width and height values are retrieved even for image elements that load asynchronously or are delayed in rendering.

In summary, the key to resolving the issue of jQuery returning a width and height value of 0 for an img element lies in making sure the image has finished loading before attempting to retrieve its dimensions. By incorporating the suggested methods into your code, you can obtain the correct dimensions and enhance the functionality of your web applications.

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