<html><body><img id="myImg" src="compman.gif" width="107" height="98"><p>单击该按钮可显示图像的高度。</p><button onclick="myFunction()">试一试</button><p id="demo"></p><script>function myFunction() { var x = document.getElementById("myImg").height; document.getElementById("demo").innerHTML = x;}</script></body></html>