<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Docunment</title>
</head>
<body>
<script type="text/javascript">
const Lightwidth = 50
const Lightheight = 50
const Rowcount = 10
const Colcount = 10
const Oncolor = ‘yellow‘
const Offcolor = ‘black‘
gameInit()
function gameInit() {
let wrapper = document.createElement(‘div‘)
wrapper.style.width = Lightwidth * Colcount + ‘px‘
wrapper.style.height = Lightheight * Rowcount + ‘px‘
document.body.appendChild(wrapper)
for (let i = 1; i <= Colcount * Rowcount; i++) {
let light = document.createElement(‘div‘)
light.id = i
light.style.boxSizing = ‘border-box‘
light.style.border = ‘1px solid gray‘
light.style.width = Lightwidth + ‘px‘
light.style.height = Lightheight + ‘px‘
light.style.backgroundColor = Offcolor
light.style.float = ‘left‘
light.onclick = lightClick
wrapper.appendChild(light)
}
}
function lightClick(light) {
turnLight(this)
// 找到上下左右的灯
let aList = getAroundList(this)
for (let i = 0; i < aList.length; i++) {
turnLight(aList[i])
}
}
function getAroundList(light) {
let offsetList = [1, -1, Colcount, -Colcount]
let aList = []
for (let i = 0; i < offsetList.length; i++) {
let newID = parseInt(light.id) + offsetList[i]
if (verifyId(light.id, newID)) {
aList.push(document.getElementById(newID))
}
}
return aList
}
// 校验灯的有效性
function verifyId(id1, id2) {
if (id1 > 1 && id1 <= Rowcount * Colcount && id2 > 2 && id2 <= Rowcount * Colcount) {
if (Math.abs(id1 - id2) == 1) {
// 说明两个灯是左右关系 如果不是同一行就有问题了
let row1 = Math.ceil(id1 / Colcount)
let row2 = Math.ceil(id2 / Colcount)
return row1 == row2
}
return true
}
return false
}
function turnLight(light) {
if (light.style.backgroundColor != Oncolor) {
light.style.backgroundColor = Oncolor
}else{
light.style.backgroundColor = Offcolor
}
}
</script>
</body>
</html>
原文：https://www.cnblogs.com/Deep-dark/p/11420784.html