1221973 - image.complete is inconsistent after setting base64 string

Status: RESOLVED INVALID

(Core :: DOM: Core & HTML, defect)

Description

[capajj]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0
Build ID: 20151016093648

Steps to reproduce:

Pasted into console:

var img = new Image();img.src = 'data:image/gif;base64,R0lGODlhDwAPAKECAAAAzMzM/////wAAACwAAAAADwAPAAACIISPeQHsrZ5ModrLlN48CXF8m2iQ3YmmKqVlRtW4MLwWACH+H09wdGltaXplZCBieSBVbGVhZCBTbWFydFNhdmVyIQSAOw==';console.log(img.complete)


Actual results:

first time this runs for that base64 string it logs false, any time after that it returns true


Expected results:

I would expect it to return true every time for base64 images with src set

Comment 1

[Boris Zbarsky [:bzbarsky]]

The image will be complete when either the sync image cache is hit (which is what you see on the second and later times you do this) or when the async data: fetc completes (which is what you see the first time).  Since the fetc is async, img.complete does not become true immediately.