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我正在制作一个井字游戏,其中我有一系列9个按钮。我根据变量isX
的布尔值将背景图像更改为X
或O
。未识别JavaScript功能
我有一个div
与编号stage
它拥有类square
的所有按钮。我在stage
上添加了一个监听器,并通过了event
参数。但是,功能clickHandler
未被识别。 Chrome的说:
Uncaught ReferenceError: clickHandler is not defined 2Players.html:38
(anonymous function)
HTML:
<body>
<div id="stage">
</div>
</body>
CSS:
#stage{
width: 400px;
height: 400px;
padding: 0px;
position: relative;
}
.square{
width: 64px;
height: 64px;
background-color: gray;
position: absolute;
}
的JavaScript:
const ROWS = 3;
const COLS = 3;
const GAP = 10;
const SIZE = 64;
var stage = document.querySelector("#stage");
var lotOfButtons = [];
var winningPatterns = ["123","159","147",
"258","357","369",
"456","789"];
var isX = true;
var player1Pattern = "";
var player2Pattern = "";
stage.addEventHandler("click",clickHandler,false);
prepareBoard();
function prepareBoard(){
for(var row = 0;row<ROWS;row++){
for(var col = 0;col < COLS;col++){
var square = document.createElement("button");
square.setAttribute("class","square");
stage.appendChild(square);
lotOfButtons.push(square);
square.style.left = col * (SIZE+GAP) + "px";
square.style.top = row * (SIZE+GAP) + "px";
}
}
function clickHandler(event){
if(isX===true){
event.target.style.backgroundImage = "url(../img/X.PNG)";
isX = false;
}else{
event.target.style.backgroundImage = "url(../img/O.PNG)";
isX = true;
}
}
}
抛开你的问题,你可能会受益于使用spritesheet,只是抵消背景位置,而不是交换图像。 – 2013-04-25 03:44:41
@KaiQing肯定的事情,会学到:) – 2013-04-25 04:08:14