我正在为一个小项目构建一个非常简单的记忆游戏。逻辑如下:
这是我的脚本(在JSFiddle中分叉):
$(".button").click(function () {
// get the value from the input
var numCards = parseInt($('input').val());
for (var i = 1; i <= numCards; i++) {
// create the cards
$(".container").append("<div class='card" + i + " cards'></div>") &&
$(".card" + i).clone().appendTo(".container");
}
// randomize cards in stack
var cards = $(".cards");
for (var i = 0; i < cards.length; i++) {
var target = Math.floor(Math.random() * cards.length - 1) + 1;
var target2 = Math.floor(Math.random() * cards.length - 1) + 1;
var target3 = Math.floor(Math.random() * cards.length - 1) + 1;
cards.eq(target).before(cards.eq(target2)).before(cards.eq(target3));
}
});
我现在需要的是调整第3步,意味着动态创建目标变量,以及代码的最后一行
cards.eq(target).before(cards.eq(target2)).before(cards.eq(target3));
所以请给我一个建议 - 你会怎么做?并且记住这是一个适合初学者的项目。谢谢!
答案 0 :(得分:1)
以下是jsfiddle中代码的版本 - http://jsfiddle.net/007y4rju/6/
请检查行为是否与原始代码一致。
$(document).ready(function () {
$(".button").click(function () {
// get the value from the input
var numCards = parseInt($('input').val());
for (var i = 1; i <= numCards; i++) {
// create the cards
$(".container").append("<div class='card" + i + " cards'></div>") &&
$(".card" + i).clone().appendTo(".container");
}
// randomize cards in stack
var cards = $(".cards");
var startTarget = Math.floor(Math.random() * cards.length - 1) + 1;
var collection = cards.eq(startTarget);
var nextTarget;
var i;
for (i = 0; i < cards.length; i++) {
nextTarget = Math.floor(Math.random() * cards.length - 1) + 1;
collection.before(cards.eq(nextTarget));
}
});
});
答案 1 :(得分:1)
$(".button").click(function () {
// get the value from the input
var numCards = parseInt($('input').val());
for (var i = 1; i <= numCards; i++) {
// create the cards
$(".container").append("<div class='card" + i + " cards'></div>") &&
$(".card" + i).clone().appendTo(".container");
}
var parent = $(".container");
var divs = parent.children();
while (divs.length) {
parent.append(divs.splice(Math.floor(Math.random() * divs.length), 1)[0]);
}
});
请参阅jsfidle:http://jsfiddle.net/007y4rju/8/
答案 2 :(得分:1)
克隆div时,可以在类名(card%i%
)中随机化索引。然后你不需要洗牌克隆的div;你可以按原样追加它们。
$(".button").click(function () {
// get the value from the input
var numCards = parseInt($('input').val());
for (var i = 1; i <= numCards; i++) {
// create the cards
$(".container").append("<div class='card" + i + " cards'></div>");
}
var aIndices = [];
for (var i = 1; i <= numCards; i++) {
var ix;
do ix = Math.round(Math.random() * (numCards - 1)) + 1;
while (aIndices.indexOf(ix) >= 0);
aIndices.push(ix);
// clone
$(".card" + ix).clone().appendTo(".container");
}
});