🔗ally.is.validArea
Determines if an <area> element is properly used via <map> by an <img>.
🔗Usage
var element = document.getElementById('victim');
var isValidArea = ally.is.validArea(element);
🔗Arguments
| Name | Type | Default | Description |
|---|---|---|---|
| element | HTMLElement | required | The Element to test. |
🔗Returns
Boolean, true if the element is focus relevant.
🔗Throws
TypeError if element argument is not of type HTMLElement.
🔗Changes
- Since
v#masterthe<img usemap="#…" …>is resolved in the same document<map>is from (e.g. within an iframe) - Since
v#masterthe existence of thehrefattribute is considered.
🔗Notes
NOTE: Firefox only allows fully loaded images to reference image maps
NOTE: Multiple use of same image map hides elements from tabbing sequence - Gecko 1116126