代码如下： <!--脚本说明：第一步:把如下代码加入<body>区域中:--> <SCRIPT LANGUAGE="JavaScript"> <!-- // create row of radio buttons lay(20) // set index of lamp to start animation var current = 0 // set speed (pause in milliseconds between each movement) var speed = 100 function lay(num) { // assign "greater than" character to variable var gt = unescape("%3e") // open form document.write("<FORM NAME='animation'" + gt) // use loop to lay radio buttons down (all buttons in same group) for (var i = 0; i < num; ++i) { document.write("<INPUT TYPE='radio' NAME='lamps'" + gt) } // close form document.write("</FORM" + gt) } function animate() { // click next radio button document.animation.lamps[current].click() // if radio button is the last one reset variable to 0 (otherwise increment) current = (current == document.animation.lamps.length - 1) ? 0 : ++current // recursive call after speed milliseconds timerID = setTimeout("animate()", speed) } // --> </SCRIPT> <!--第二步:把<body>中的内容改为--> <body bgcolor="#fef4d9" onLoad="animate()">
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