Image Maps with clickable areas in HTML5

Image Maps

Use the <map> tag to define an image-map. An image-map is an image with clickable areas.
The name attribute of the <map> tag is associated with the <img>’s usemap attribute and creates a relationship between the image and the map.
The <map> tag contains a number of <area> tags, that defines the clickable areas in the image-map:

<img src=“planets.gif” alt=“Planets” usemap=“#planetmap” style=“width:145px;height:126px;”>
<map name=“planetmap”>
<area shape=“rect” coords=“0,0,82,126” alt=“Sun” href=“sun.htm”>
<area shape=“circle” coords=“90,58,3” alt=“Mercury” href=“mercur.htm”>
<area shape=“circle” coords=“124,58,8” alt=“Venus” href=“venus.htm”>
</map>
The coords in a rect(angle) left up is 0,0 and down right is 145, 126 (in the image-map planets.gif)
(coords is width, height)
here a grid as an example
gridhtml5
circle” coords=“90,58,3 ”  First 90,58 is the center of the circle and 3 is the radius.

more about HTML5  w3schools.

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