javascript - 如何过滤数据过滤器 jQuery

Question

我想在 jQuery 中创建一个过滤器函数。所以当有人点击一个类别时，它只会显示该类别的项目。我编写了一些函数的代码，但我无法让它工作。

我想要的是检查类别列表中的 data-filter 是否等于 `data-cat.如果是这样，我想显示与公式匹配的帖子。

我做错了什么？

HTML:

        <div class="grid_12" id="category-nav">
            <ul id="category" class="list-of-links centered">
                <li><a href="#" class="current-cat" data-filter="rondvaart">Rondvaart</a></li>
                <li><a href="#" data-filter="wandelingen">Wandelingen</a></li>
                <li><a href="#" data-filter="rondleidingen">Rondleidingen</a></li>
                <li><a href="#" data-filter="groepsarrangementen">Groepsarrangementen</a></li>
            </ul>

        </div><!-- End div.grid_12 #category-nav -->

        <article class="post" data-cat="wandelingen">
                <header>
                    <p class="byline">Rondvaart</p>
                    <h2>Binnendieze</h2>
                </header><!-- End header -->

        </article><!-- End article.post -->

        <article class="post" data-cat="rondleidingen">
                <header>
                    <p class="byline">Rondvaart</p>
                    <h2>Binnendieze</h2>
                </header><!-- End header -->

        </article><!-- End article.post -->

        <article class="post" data-cat="wandelingen">
                <header>
                    <p class="byline">Rondvaart</p>
                    <h2>Binnendieze</h2>
                </header><!-- End header -->

        </article><!-- End article.post -->

        <article class="post" data-cat="groepsarrangnementen">
                <header>
                    <p class="byline">Rondvaart</p>
                    <h2>Binnendieze</h2>
                </header><!-- End header -->

        </article><!-- End article.post -->

j查询:

// Variable 
    var posts = $('#activiteiten .post');
        posts.hide();

    // Click function
    $( "#category li a" ).click(function() { 
        // Get data of category
        var customType = $( this ).data(); // category
            console.log(customType);
            console.log(posts.length); // Length of articles

        $('#activiteiten .post').each(function() {


            // Get data of item
            data = posts.data();
                   console.log(data);


            // If equal = show
            if( data == customType ){
                alert("equal");
            }


        });
    });

Answer 1

如果你要过滤你的帖子，你需要 filter() 方法:

var posts = $('.post');
posts.hide();

$('#category li a').click(function() { 
    var customType = $( this ).data('filter');

    posts
        .hide()
        .filter(function () {
            return $(this).data('cat') === customType;
        })
        .show();
});

演示:http://jsfiddle.net/FSLXT/