<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<style>
div {
width: 300px;
height: 300px;
background-color: pink;
}
</style>
<script>
//随机产生一个发6进制的颜色值
//封装成一个函数
console.log(parseInt(Math.random() * 5));
function getColor() {
var str = "#";
var arr = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];
for (var i = 0; i < 6; i++) {
//产生的每个随机数都是一个索引,根据索引找到数组中对应的值,拼接到一起
str += arr[parseInt(Math.random() * 16)];
}
return str;
}
//页面记载的事件
window.onload = function () {
//在文档中通过id的属性值查找这个元素(标签).设置该标签的背景颜色
document.getElementById("dv").style.backgroundColor = getColor();
};
// alert(getColor());
</script>
</head>
<body>
<div id="dv">
</div>
</body>
</html>
