一键改变背景色
2013-10-03 13:07:12 -0400
<script> function randomColor() { //16进制方式表示颜色0-F var arrHex = ["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"]; var strHex = "#"; var index; for(var i = 0; i < 6; i++) { //取得0-15之间的随机整数 index = Math.round(Math.random() * 15); strHex += arrHex[index]; } return strHex; } function changeBg(){ var bgColor = randomColor(); //改变背景色的代码 var myBackground = document.getElementById("whole_body"); //改变背景色的区域 myBackground.style.backgroundColor = bgColor; } </script> <input type="button" value="随机背景色" onclick="changeBg()">
演示：点下面的随机背景色按钮
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