点击运行
<html> <body> <img id="planets" src="/zy/i/eg_planets.jpg" usemap="#planetmap" /> <map name="planetmap"> <area shape="circle" coords="180,139,14" href ="/zy/example/html/venus.html" target ="_blank" alt="Venus" /> </map> <p>单击按钮以显示图像的 usemap 属性的值。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("planets").useMap; document.getElementById("demo").innerHTML = x; } </script> </body> </html>
运行结果
