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<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>递归调用</title>
</head>
<script>
function fc() {
var aa = document.getElementById("bb");
var red = Math.random() * 255;
var green = Math.random() * 255;
var blue = Math.random() * 255;
aa.style.color = "rgb(" + red + "," + green + "," + blue + ")";
setInterval("fc()", 500);
}
</script>
<body onload="fc();">
<div id="bb">JS将会随机改变这个文字的颜色</div>
</body>
</html>