Avatar component adds an alternative avatar prop

[ZerroRt]

This function solves the problem (这个功能解决的问题)

Automatically load alternative avatars when the src of the Avatar component loads error

Expected API (期望的 API)

The component adds a'default' attribute, or the src attribute supports passing in a string array, the first item of the array is loaded by default, and the next item of the array is automatically loaded when the loading error occurs

[Sepush]

@amadeus711 any update about this?
I'm glad to work on it and give a PR.

[07akioni]

@amadeus711 any update about this? I'm glad to work on it and give a PR.

You can create a general image inside _internal folder and use it in avatar. We can finally move it to vueuc later.

The image component should suppport some fallback options.

Maybe a fallbackImageUrl prop and a fallback slot