<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>游戏初始化界面</title><style>body {margin: 0;padding: 0;}#main {margin: 100px;}.btn {width: 100px;height: 40px;}</style>
</head><body><div id="main"><!-- 按钮 --><input class="btn" type="button" value="开始游戏" id="begin"><input class="btn" type="button" value="暂停游戏" id="pause"></div><!-- 贪吃蛇游戏设计 --><script>var timer; //变量可以提升/* 开始 */document.getElementById('begin').onclick = function() {clearInterval(timer);timer = setInterval(function() {}, 300)}/* 暂停 */document.getElementById('begin').onclick = function() {clearInterval(timer);timer = setInterval(function() {}, 300)}</script>
</body></html>
)
