IMG. onerror

When displaying a user's avatar, we usually first display the following strategies, that is, the loading.gif is displayed in the procedure, and the Avatar is displayed after being loaded. This improves the user experience. Loading is always displayed, which is also misleading for users.

To solve this problem, we introduced the onerror event, which is unique to the IMG tag and triggered when an image loading error occurs. In this case, we can replace loading.gif with the default picture (for example, the default picture provided by the system for the user) when the picture is incorrect ).

The binding method is as follows:

In HTML:

In javascript:

IMG. onerror = handler;

IMG. addeventlistener ("error", handler, usecapture );

IMG. attachevent ("onerror", Handler );

IMG. onerror