Using Angular markup like {{hash}} in a src attribute doesn't
work right: The browser will fetch from the URL with the literal
text {{hash}} until Angular replaces the expression inside
{{hash}}. The ngSrc directive solves this problem.
The buggy way to write it:
<img src="http://www.gravatar.com/avatar/{{hash}}"/>
The correct way to write it:
<img ng-src="http://www.gravatar.com/avatar/{{hash}}"/>
<IMG
  ng-src="">
...
</IMG>| Param | Type | Details | 
|---|---|---|
| ngSrc | template | any string which can contain  |