Use of image hotspots, usage of html _html/css_WEB-ITnose

tag is mainly used in image maps. Through this tag, the action area (also called hotspot) can be set in the image map, so that when the user moves the mouse to the specified action area When clicked, it will automatically link to the preset page. The basic syntax structure is as follows:

Class and id: specify hot spots respectively The type and id number.

alt: Alternative text used to set hotspots.

href: used to set the url address linked to the hotspot.

Shape and coords: are the two main parameters used to set the shape and size of the hotspot. Its basic usage is as follows:

　 means setting the shape of the hotspot to a rectangle, and the coordinates of the upper left corner vertex are (X1 , y1), the coordinates of the lower right corner vertex are (X2, y2).

　 Indicates that the shape of the hotspot is set to be a circle, the center coordinates are (X1, y1), and the radius is r.

　Indicates that the shape of the hotspot is set to a polygon, and the coordinates of each vertex are ( X1,y1), (X2,y2), (x3,y3)….

Remarks: The positions of x1, y1, x2, y2 are determined based on the picture, not the size of the window.

& lt; area & gt; marked is divided into the area in the image map, so the area of ​​its division must be Another tag