<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<style>
#container div{
width: 50px;
height: 50px;
background-color: red;
position: absolute;
top: 40px;
left: 0px;
margin-right: 10px;
}
#container .on{
background-color: yellow;
}
</style>
<script>
window.onload = function () {
var btn1 = document.getElementsByTagName('button')[0];
var container = document.getElementById('container');
var box = container.getElementsByTagName('div');
var str = '';
for (var i = 0; i < 10; i++) {
str += '<div></div>';
};
container.innerHTML = str;
for (var i = 0; i < box.length; i++) {
box[i].style.left = 80*i + 'px';
}
btn1.onclick = go;
var num = 0;
function go() {
//if (num < 10) {
clearInterval(box.timer);
box.timer = setInterval( function () {
for (var i = 0; i < box.length; i++) {
box[i].className = '';
};
box[num].className = 'on';
num++;
if (num >= 10) {
clearInterval(box.timer);
num = 0;
num1 = 9;
go1();
};
//box[num-1].className = 'on';
//num %= box.length;//循环
}, 100);
//}
};
//var num1 = 9;
function go1() {
if (num1 >= 0) {
clearInterval(box.timer);
box.timer = setInterval( function () {
for (var i = 0; i < box.length; i++) {
box[i].className = '';
};
box[num1].className = 'on';
num1--;
if (num1 == -1) {
clearInterval(box.timer);
//num1 = 9;
};
}, 100);
}
};
};
</script>
</head>
<body>
<button>go</button>
<div id="container"></div>
</body>
</html>觉得这么写很麻烦，求更简单的实现法子
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