javascript typing game implementation code_javascript skills

The effect is as shown in the picture:

The following is the core code

Copy the codeThe code is as follows:

GAME = {
//Randomly generate letters
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");
//Randomly generate letters
var index = Math.floor(Math.random() * 26);
return arrLetter[index];
},
//Random letter color
randLetterColor : function() {
var arrLetterColor = new Array("Red", "Green", "#555", "Blue", "Black");
var index = Math.floor(Math.random( ) * 4);
return arrLetterColor[index];
},
//Random letter size
randLetterSize: function() {
var arrLetterSize = new Array("12px", " 16px", "20px", "24px", "28px", "32px", "36px", "40px");
var index = Math.floor(Math.random() * 7);
return arrLetterSize[index];
},
//Create 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 whereabouts
divDown: function() {
var divTop = parseInt(this.div.style.top.slice(0, -2)); //Top of the letter square
var mapHeight = parseInt(document.getElementById("map").style.height. slice(0, -2));
//disappear
if (divTop < mapHeight - parseInt(this.height) 20) {
this.div.style.top = divTop 30;
//Get the value of the key
document.onkeydown = function() {
//Is the letter of the key equal to the value of the div
if (String.fromCharCode(event.keyCode) == GAME. div.innerText) {
document.getElementById("TextRecord").value = "Correct";
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 = "Error";
}
}
}
//It will disappear when it reaches the bottom line, and then create a 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';
}

}

Effect Demonstration

<p> Snmon corrected the question - -|||, and the question requirements are 100 times more complicated. . . </p>For now, only randomly generated letters have been implemented, the keyboard has been monitored, and the score has not been calculated yet. <div style="border-bottom: blue 1px solid; border-left: blue 1px solid; width: 400px; height: 300px; border-top: blue 1px solid; border-right: blue 1px solid" id="map"> </div> <div id="foot"> <input id="TextRecord" value="0" type="text">Score: </div> <div> <input id="ButtonStart" onclick="GAME.START();" value="GAME START" type="button"><input id="ButtonStop" onclick="GAME.STOP();" value="GAME STOP" type="button"><div> </div> <br><input onclick="runEx('runcode33788')" type="button" value="运行代码"><input onclick="doCopy('runcode33788')" type="button" value="复制代码"> <input onclick="doSave(runcode33788)" type="button" value="保存代码"> <a href="http://www.jb51.net/article/23421.htm" title="查看具体详情" target="_blank">[Ctrl A select all Note: </a>If you need to introduce external Js, you need to refresh to execute </div>]<script type="text/javascript"> 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'; } } </script>