img src无法使用JS / JQuery正常工作：显示上一张图片而不是新上传的图片

Question

I have a form to upload images. By default the source is "images/noimage.png" ;

<img id="previewing" src="images/noimage.png" />

I store the path in the database. If I select a specific user and the form gets loaded I want to display the image for the specific user. I do this in the windows.onload event. However another image (previous image the user had, if user had one) gets loaded instead of the new one.

var Logo = 'Logos/123.png'; //path stored in Database

if (Logo!='') {
  //If the user has a 'Logo', show it
   $("#previewing").prop("src", Logo);
} else { 
  // if user has no 'Logo', show default image
   $("#previewing").prop("src", 'Images/noimage.png');
}

This does not work as expected. What's wrong here?

Answer 1

If after reloading image getting change then most probably its Caching issue. you may try adding some random string into image URL like

Logos/123.png?v=xyz