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javascript typing game implementation code_javascript skills

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Release: 2016-05-16 18:30:41
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The effect is as shown in the picture:
javascript typing game implementation code_javascript skills
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';
}

}

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