我正在练习 jquery,并尝试构建一个非常基本的 Tic Tac Toe 游戏。
我想将我的 html 表设置为相当于数组形式的网格索引,并根据玩家的点击更改它们的值。目前,我的颜色变化取决于轮流工作,但我不断收到此 Uncaught TypeError,引用条件语句中的 board[row][col] = x
行。
我的代码:
$(document).ready(function(event) {
var count = 0;
var board = [
[0, 0, 0],
[0, 0, 0],
[0, 0, 0]
];
var row = $(this).parent().index();
var col = $(this).index();
$('td').click(function() {
// if count is even, player 1 is yellow
// if count is odd, player 2 is blue
if (count % 2 === 0) {
$(this).addClass('yellow');
count++;
board[row][col] = 1;
} else {
$(this).addClass('blue');
count++;
board[row][col] = 2;
}
});
});
相关html:
<div id="main_container">
<h1 id="main_heading" class="heading" >Tic! Tac! Toe!</h1>
<h2 id="winning"></h2>
<table>
<tbody>
<tr class="box_row" >
<td id="box_0_0" class="box_cell" data-row="0" data-col="0" data-clicked="0"></td>
<td id="box_0_1" class="box_cell" data-row="0" data-col="1" data-clicked="0"></td>
<td id="box_0_2" class="box_cell" data-row="0" data-col="2" data-clicked="0"></td>
</tr>
<tr class="box_row">
<td id="box_1_0" class="box_cell" data-row="1" data-col="0" data-clicked="0"></td>
<td id="box_1_1" class="box_cell" data-row="1" data-col="1" data-clicked="0"></td>
<td id="box_1_2" class="box_cell" data-row="1" data-col="2" data-clicked="0"></td>
</tr>
<tr class="box_row">
<td id="box_2_0" class="box_cell" data-row="2" data-col="0" data-clicked="0"></td>
<td id="box_2_1" class="box_cell" data-row="2" data-col="1" data-clicked="0"></td>
<td id="box_2_2" class="box_cell" data-row="2" data-col="2" data-clicked="0"></td>
</tr>
</tbody>
</table>
</div>
相关CSS:
.yellow {
background-color: #ffc300;
}
.blue {
background-color: #73d2c9;
}
最佳答案
问题是您在哪里读取索引值,您需要在点击处理程序中读取它
$(document).ready(function (event) {
var count = 0;
var board = [
[0, 0, 0],
[0, 0, 0],
[0, 0, 0]
];
//here this is the document object
$('td').click(function () {
//reading index values should be inside the click handler, here `this` refers to the clicked `td` element
var row = $(this).parent().index();
var col = $(this).index();
// if count is even, player 1 is yellow
// if count is odd, player 2 is blue
if (count % 2 === 0) {
$(this).addClass('yellow');
count++;
board[row][col] = 1;
} else {
$(this).addClass('blue');
count++;
board[row][col] = 2;
}
});
});
关于JavaScript 未捕获类型错误 : Cannot set property '-1' of undefined,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26643322/