jquery - 为两个相似的元素独立地使用 jQuery 更改 CSS 类

Question

我有两个相似的 HTML block (一个用于新闻，第二个用于特别优惠)，它们的底部都有分页按钮，因此我尝试构建一个通用函数来独立更改分页按钮状态(事件/非事件)每个街区，但我失败了。这就是问题所在。我该怎么做？

这是 JSFiddle:http://jsfiddle.net/iamsvyat/5TjKQ/

HTML:

<div id="news-block">News Block</div>
<div class="pag-circles">
    <button class="pag-circle-1 active">&nbsp;</button>
    <button class="pag-circle-2 inactive">&nbsp;</button>
    <button class="pag-circle-3 inactive">&nbsp;</button>
    <button class="pag-circle-4 inactive">&nbsp;</button>
</div>
<div id="special-offers-block">Special Offers Block</div>
<div class="pag-circles">
    <button class="pag-circle-1 active">&nbsp;</button>
    <button class="pag-circle-2 inactive">&nbsp;</button>
    <button class="pag-circle-3 inactive">&nbsp;</button>
    <button class="pag-circle-4 inactive">&nbsp;</button>
</div>

CSS:

button {
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    border: 6px solid black;
    border-radius: 6px;
}
.active {
    border-color: red;
}
.inactive {
    border-color: black;
}
button:focus {
    outline: none;
}
button:active {
    position: relative;
    top: 1px;
}

jQuery:

$("#news-block").next(".pag-circles").children().click(function() {
    //if the first button is clicked
    //if the second button is clicked
    //if the third button is clicked
    //if the fourth button is clicked
});
$("#special-offers-block").next(".pag-circles").children().click(function() {
    //if the first button is clicked
    //if the second button is clicked
    //if the third button is clicked
    //if the fourth button is clicked
});

Answer 1

使用事件委托(delegate)检查此修订 HERE

$("#firstCommonAncestor").on('click', 'button',function (e) {
    var t = $(this);
    t.addClass('active').removeClass('inactive').siblings().removeClass('active').addClass('inactive')
});