How to determine whether the image is loaded and the image width is obtained through JS _ javascript skills

This article introduces how to determine whether the image is loaded and the image width is obtained by JS, if you have any need, you can refer to the situation that web users often encounter customers uploading images to break the webpage content area, next we will discuss how to use js to solve this problem, the specific idea is to process the width or height of the Image right after js judges that the Image on the client has been downloaded. js processes the Image mainly by using the Image object in js, the onload event and onreadystatechange are used to determine whether to perform the operation.

(1) method 1, through the onload event, for example:

The Code is as follows: