当我打开页面（本质上是一个迷你游戏）时，我正在努力尝试打开Firebug，页面冻结，脚本面板显示这个东西：
/*! jQuery v2.2.0 | (c) jQuery Foundation | jquery.org/license */
!function(a,b){"object"==typeof module&&"object"==typeof module.exports?module.exports=a.document?b(a,!0):function(a){if(!a.document)throw new Error("jQuery requires a window with a document");return b(a)}:b(a)}("undefined"!=typeof window?window:this,function(a,b){var c=[],d=a.document,e=c.slice,f=c.concat,g=c.push,h=c.indexOf,i={},j=i.toString,k=i.hasOwnProperty,l={},m="2.2.0",n=function(a,b){return new n.fn.init(a,b)},o=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,p=/^-ms-/,q=/-([\da-z])/gi,r=function(a,b){return b.toUpperCase()};n.fn=n.prototype={jquery:m,constructor:n,selector:"",length:0,toArray:function(){return e.call(this)},get:function(a){return null!=a?0>a?this[a+this.length]:this[a]:e.call(this)},pushStack:function(a){var b=n.merge(this.constructor(),a);return b.prevObject=this,b.context=this.context,b},each:function(a){return n.each(this,a)},map:function(a){return this.pushStack(n.map(this,function(b,c)
它只是其中的一部分，我认为它与jQuery缩小文件有关。但这是什么意思？为什么这会在我正在处理的页面中创建问题的可能性有多大？ 对不起，如果我问这里，它可能是一个基本的东西，但如果我谷歌这个代码我找不到太多的解释。
我的整个JS代码：
$(document).ready(function(){
var game = {};
//point contexts to the canvases
game.backgroundContext = document.getElementById("backgroundCanvas").getContext("2d");
game.playerContext = document.getElementById("playerCanvas").getContext("2d");
//game.flashFX = document.getElementById("flash-effect").getContext("2d");
//set global positioning and scale vars
game.width = $("#backgroundCanvas").width();
game.height = $("#backgroundCanvas").height();
game.centerX = game.width / 2;
game.centerY = game.height / 2;
//create images array and counters
game.images = [];
game.loadedImages = 0;
game.requiredImages = 0;
//array holding background stars data....
game.BGstars = [];
game.starFrequency = 1;
game.starAcceleration = 1;
game.player = {
x : game.centerX - 61,
y : game.centerY * 3/2,
yStart : game.centerY * 3/2,
width : 112,
height : 75,
animte : false
};
game.inertialState = true;
game.residualAcceleration;
game.residualFrequency;
//TODO: hook with database.....OR create randowords generator....
game.textsArray = [];
game.currentText = "";
//game.wordComplete = false;
//game.wordDisplayed = false;
//function to get random int within a specified range
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
//init function - starting point of the game interactivity
function init(){
addStars(500, game.starFrequency)
//draws the player TODO: create function to draw all elements!!!!
game.playerContext.drawImage(game.images[0], game.player.x, game.player.y);
selectAndDisplayText();
loop();
}
function detectTyping()
{
var typedNow = "";
var letterIDX = 0;
var tempTyped = "";
$(document).on("keyup", function(){
game.inertialState = true;
game.residualAcceleration = game.starAcceleration;
game.residualFrequency = game.starFrequency;
if(tempTyped == game.currentText)
selectAndDisplayText();
});
$(document).on("keypress", function(event){
typedNow = String.fromCharCode(event.which);
if(game.currentText.charAt(letterIDX) == typedNow)
{
game.inertialState = false;
$("#char" + letterIDX).css("color", "green");
$("#char" + letterIDX).animate({
marginRight: "1px"
}).animate({
marginRight: "0"
});
if(typedNow == " ")
$("#char" + letterIDX).text(" ");
tempTyped += typedNow;
letterIDX++;
starsThrusting(true);
//console.log(tempTyped);
}
else
{
if(game.currentText.charAt(letterIDX) == " ")
$("#char" + letterIDX).text("_");
$("#char" + letterIDX).css("color", "red");
$("#char" + letterIDX).stop(true).animate({
fontSize: "1.2em",
margin: "1px"
}).animate({
fontSize: "1em",
margin: "0"
});
starsThrusting(false);
}
});
}
function pullAndFormatText(filepath)
{
$.ajax({
type: "GET",
url: filepath,
dataType: "text",
success: function(text){
game.textsArray = text.split("\n");
for(i in game.textsArray)
{
if(game.textsArray[i] == "")
game.textsArray.splice(i,1);
}
init();
}
});
}
function selectAndDisplayText(){
$(document).off();
game.currentText = game.textsArray[getRandomInt(0, game.textsArray.length - 1)];
var htmlToFill = "";
for(var i=0; i<game.currentText.length; i++)
htmlToFill += "<span id='char"+i+"'>"+game.currentText[i]+"</span>";
$("#word-displayer").slideUp("250", function(){
$(this).html(htmlToFill);
});
$("#flash-effect").fadeIn(500).fadeOut(500);
$("#word-displayer").slideDown("250", detectTyping());
}
function starsThrusting(upThrust)
{
if(upThrust)
{
game.starAcceleration = Math.min(20, game.starAcceleration + 1);
game.starFrequency = Math.max(1, game.starAcceleration/4);
}
else
{
game.starAcceleration = Math.max(1, game.starAcceleration - 1);
game.starFrequency = Math.max(1, game.starAcceleration/4);
}
}
function decelarateStars(time)
{
if (game.starAcceleration > 1)
{
game.starAcceleration -= game.residualAcceleration / (60 * time);
game.starFrequency += game.residualFrequency / (time * 60 * 4);
}
else
{
game.starAcceleration = 1;
game.starFrequency = 1;
}
}
function shipAnimation()
{
var beenOut = false;
game.player.y -= 4;
if(game.player.y < -100)
{
game.player.y = game.height + 100;
beenOut = true;
}
if(game.player.y > game.player.yStart && beenOut)
{
game.player.y = game.player.yStart;
beenOut = false;
game.player.animate = false;
}
console.log(game.player.y + " " + beenOut);
}
//updates all the data regarding game objects
function update(){
addStars(game.starFrequency, 2);
for(i in game.BGstars)
{
game.BGstars[i].y += (game.BGstars[i].speed * game.starAcceleration);
if(game.BGstars[i].y > game.height)
game.BGstars.splice(i,1);
}
if(game.inertialState)
decelarateStars(2);
if(game.player.animate)
shipAnimation();
$("#controlpanel").html(game.starAcceleration);
}
//renders the changes to game objects occured in 'update'
function render(){
game.backgroundContext.fillStyle = "white";
game.backgroundContext.clearRect(0, 0, game.width, game.height); //clears the screen on every interval
//creates rects -stars- for every element in the BGstars array
for(i in game.BGstars)
{
var individualStar = game.BGstars[i];
game.backgroundContext.fillRect(individualStar.x,
individualStar.y,
individualStar.size,
individualStar.size);
}
}
//put num of elements in the BGstars array (/w properly randomized properties)....
function addStars(num, type)
{
var starH;
var starS;
var starSpeed;
for(var i=0;i<num; i++)
{
if(type == 1)
starH = Math.floor(Math.random() * game.height);
else if(type == 2)
starH = - 10;
else if(type == 3)
starH = Math.floor((Math.random() * game.height) - game.height);
if(Math.random() > .5)
{
starS = Math.random() * getRandomInt(1,2);
starSpeed = .5;
}
else
{
starS = Math.random() * getRandomInt(3,4);
starSpeed = 1;
}
game.BGstars.push({
x: Math.floor(Math.random() * game.width),
y: starH,
size: starS,
speed: starSpeed
});
}
}
//the core of the game engine powered by 'requestAnimFrame'
function loop(){
//calls itself (hence also render and update) once every given interval - see below
requestAnimFrame(function(){
loop();
});
update();
render();
}
//initialize and keep count of how many images get successfully loaded....
function initImages(paths)
{
game.requiredImages = paths.length;
for(i in paths)
{
var img = new Image();
img.src = paths[i];
game.images[i] = img;
game.images[i].onload = function(){
game.loadedImages++;
};
}
}
//check how many images are loaded against the whole expect amount
function checkImagesLoading()
{
if(game.loadedImages >= game.requiredImages)
pullAndFormatText("SpaceType_paragraphs.txt"); //if all the imgs are there we can pull the text from the text file....
else
{
setTimeout(function(){
checkImagesLoading(); //...if not check again...
}, 100);
}
}
//pass an array with the path to the game images
initImages(["imgs/ship_001.png"]);
//start checking the images loading status
checkImagesLoading();
});