查找图像的 usemap 属性的值
- <html>
- <body>
- <img id="planets"
- src="/i/eg_planets.jpg"
- usemap="#planetmap" />
- <map name="planetmap">
- <area
- shape="circle"
- coords="180,139,14"
- href ="/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>