javascript - 使用下拉选择对 list.js 中的项目进行排序

Question

我正在使用插件 list.js 对项目列表进行排序。目前该示例显示了一个用于过滤的搜索栏，我想使用下拉选择在两种 Material “玻璃”和“塑料”之间进行更精确的过滤。

这是我的 fiddle :http://jsfiddle.net/32u3t1g9/6/ (假设 list.js 不能很好地处理它。)

编辑:使用 jquery 插件更新了 fiddle

这是我的代码:

HTML

    <div id="container">
  <div class="page">
    <div>
      <h1>piece-y search</h1>
    </div>

    <div id="main">


      <div class="c1">
        <h2>piece search</h2>
        <div id="piece-search">

            <ul class="sort-by">
            <li>
            <input class="search" placeholder="Search pieces" />
            </li>
            <li class="sort btn" data-sort="type">Sort by type</li>
            <li class="sort btn" data-sort="thickness">Sort by thickness</li>
            <li class="sort btn" data-sort="height">Sort by height</li>
            <li class="sort btn" data-sort="category">Sort by style</li>
          </ul>

          <ul class="filter">
             <li>
            <select name="material" id="filter-material">
            <option selected="selected" value="material">Select a Material</option>
            <option value="material">Plastic</option>
            <option value="material">Glass</option>
            </select> 
            </li>
            <li class="btn" id="filter-none">Show all</li>
            <li class="btn" id="filter-scientific" value="category">Only show scientific glass</li>
            <li class="btn" id="filter-artsy" value="category">Only show artsy glass</li>
          </ul>

          <ul class="list">

                  <li class="item">
                    <p class="sorting-info hide-this">
                    <p class="material">plastic</p>
                    <p class="type">pipe</p>
                    <p class="thickness">3mm</p>
                    <p class="height">15inch+</p>
                    <p class="category">artsy</p>
                     </p>
                </li>

                <li class="item">
                    <p class="sorting-info hide-this">
                    <p class="material">glass</p>
                    <p class="type">pipe</p>
                    <p class="thickness">5mm</p>
                    <p class="height">14inch-</p>
                    <p class="category">scientific</p>
                     </p>
                </li>
    </ul>
    </div>
    </div>
    </div>

    </div> <!-- end of #container -->

JS

var options = {
  valueNames: [ 'material', 'type', 'thickness', 'height', 'category' ]
};

var featureList = new List('piece-search', options);

$('#filter-material').change(function () {
    var selection = this.value; 

    // filter items in the list
    featureList.filter(function (item) {
        if (item.values().material == selection) {
            return true;
        } else {
            return false;
        }
    });

});

$('#filter-scientific').click(function() {
  featureList.filter(function(item) {
    if (item.values().category == "scientific") {
      return true;
    } else {
      return false;
    }
  });
  return false;
});

$('#filter-artsy').click(function() {
  featureList.filter(function(item) {
    if (item.values().category == "artsy") {
      return true;
    } else {
      return false;
    }
  });
  return false;
});

$('#filter-none').click(function() {
  featureList.filter();
  return false;
});

Answer 1

您需要更改选择选项的值:

<select name="material" id="filter-material">
    <option selected="selected" value="">Select a Material</option>
    <option value="plastic">Plastic</option>
    <option value="glass">Glass</option>
</select> 

然后更改事件处理程序可以如下所示:

$('#filter-material').change(function () {
    var selection = this.value;
    if (selection) {
        featureList.filter(function(item) {
            return (item.values().material == selection);
        });
    } else {
        featureList.filter();
    }
});