效果如图所示:下面是核心代码复制代码 代码如下:GAME = { //随机产生字母 randLetter: function() { var arrLetter = new Array("A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"); //随机产生字母 var index = Math.floor(Math.random() * 26); return arrLetter[index]; }, //随机字母颜色 randLetterColor: function() { var arrLetterColor = new Array("Red", "Green", "#555", "Blue", "Black"); var index = Math.floor(Math.random() * 4); return arrLetterColor[index]; }, //随机字母大小 randLetterSize: function() { var arrLetterSize = new Array("12px", "16px", "20px", "24px", "28px", "32px", "36px", "40px"); var index = Math.floor(Math.random() * 7); return arrLetterSize[index]; }, //创建DIV divCreate: function(width, height, left, top, value) { this.width = width; this.height = height; this.div = document.createElement("div"); this.div.style.width = width; this.div.style.height = height; this.div.style.left = left; this.div.style.top = top; this.div.innerText = value; this.div.style.color = this.randLetterColor(); this.div.style.fontSize = this.randLetterSize(); this.div.style.lineHeight = this.div.style.height; this.div.style.textAlign = "center"; this.div.style.fontWeight = "bold"; //this.div.style.border = "solid red 1px"; this.div.style.position = "relative"; document.getElementById("map").appendChild(this.div); return this.div; }, //DIV下落 divDown: function() { var divTop = parseInt(this.div.style.top.slice(0, -2)); //字母方块的Top var mapHeight = parseInt(document.getElementById("map").style.height.slice(0, -2)); //就消失 if (divTop < mapHeight - parseInt(this.height) + 20) { this.div.style.top = divTop + 30; //获取按键的值 document.onkeydown = function() { //按键的字母是不是 等于 div的值 if (String.fromCharCode(event.keyCode) == GAME.div.innerText) { document.getElementById("TextRecord").value = "正确"; GAME.div.style.display = "none"; clearInterval(GAME.timeCreateID); GAME.divCreate(100, 100, Math.floor(Math.random() * 300), -30, GAME.randLetter()); } else { document.getElementById("TextRecord").value = "错误"; } } } //到达底线就消失，之后再创建DIV else { this.div.style.display = "none"; GAME.divCreate(100, 100, Math.floor(Math.random() * 300), -30, this.randLetter()); } }, timeCreateID: null, timeDownID: null, START: function() { this.divCreate(100, 100, 200, -40, this.randLetter()); this.timeDownID = setInterval("GAME.divDown();", 1000); document.getElementById('ButtonStart').disabled = 'disabled'; document.getElementById('ButtonStop').disabled = ''; }, STOP: function() { if (this.timeDownID != null) { clearInterval(this.timeDownID); this.div.style.display = "none"; } document.getElementById('ButtonStart').disabled = ''; document.getElementById('ButtonStop').disabled = 'disabled'; } } 效果演示 Snmon转正题目 - -||| ，题目需求还要复杂100倍。。。 暂时只实现了随机生成字母，已监听键盘，还未计算得分。 得分： [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

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