按下时填充列表中的jQuery滤波器场的日期点

Question

如标题所示，我需要帮助从datepicker到过滤事件列表的日期。

我到目前为止得到的东西：

我有一个datepicker和一个带有事件的列表。当我按日期时，我想用在datepicker中选择的日期过滤列表。但是，我找不到拨打列表过滤场的正确方法，以便我可以完成此操作。

这是datepicker的代码，当我在datepicker中按日期时，我会按照下面的评论收到警报，这也是我希望在过滤器框中输入的地方：

$("#datepick").datepicker({
beforeShowDay: function(date) {
    //This only marks the dates where there are events.
    var result = [true, '', null];
    var matching = $.grep(events, function(event) {
        return event.Date.valueOf() === date.valueOf();
    });
    if (matching.length) {
        result = [true, 'highlight', null];
    }
    return result;
},
onSelect: function(dateText) {
    //This is what happens when you click a date.
    var date,
        selectedDate = new Date(dateText),
        i = 0,
        event = null;
    //An alert just to make sure it works up to this point. Here the list should be filtered.
    alert(selectedDate);    
}

}）;

，然后我们有看起来像这样的HTML：

<form action="#" method="get">
        <div data-role="fieldcontain">
            <div name="datepick" id="datepick"></div>
            <br />
        </div>      
    </form>
    <ul data-role="listview" data-filter="true" id="mylist" name="mylist" >
            <li name="search" id="search" data-filtertext="Surfa på internet Mellangård Markaryd 2017-03-09 (arrangör)"><a href="addaktivitet.asp?id=2244" data-ajax="false">
            <h3>Surfa på internet</h3>
            <p><strong>Ort: Markaryd</strong></p>
            <p>Arrangör: 1</p>
            <p class="ui-li-aside"><strong>Datum: 2017-03-09
                                    <br />Tider: 13.30 - 16.00 </strong></p>
        </a></li>
            <li name="search" id="search" data-filtertext="Bingo Stig Inn Strömsnäsbruk 2017-03-09 (arrangör)"><a href="addaktivitet.asp?id=2252" data-ajax="false">
            <h3>Bingo</h3>
            <p><strong>Ort: Strömsnäsbruk</strong></p>
            <p>Arrangör: 1</p>
            <p class="ui-li-aside"><strong>Datum: 2017-03-09
                                    <br />Tider: 13.30 - 16.00 </strong></p>
        </a></li>
            <li name="search" id="search" data-filtertext="Filmafton Mellangård Markaryd 2017-03-13 (arrangör)"><a href="addaktivitet.asp?id=2245" data-ajax="false">
            <h3>Filmafton</h3>
            <p><strong>Ort: Markaryd</strong></p>
            <p>Arrangör: 1</p>
            <p class="ui-li-aside"><strong>Datum: 2017-03-13
                                    <br />Tider: 16.00 - 19.30 </strong></p>
        </a></li><!-- and so on...--></ul>

如果可以过滤列表，而无需过滤框。

Answer 1

我建议您将两个过滤器保持分开，因此您可以同时在日期和自由文本之前过滤。

这种方法的一个优点是，您可以将本地化日期可视化与用于将信息存储在数据库中的标准日期格式分开。

在下面的提案中，要实现这样的多个过滤器，我定义了一个自定义数据属性，它仅包含事件的日期 - 但是，这不是严格必要的 - 最后，我将两个搜索结合在一起可过滤器小部件的过滤回调中的标准：

var dateFilter = "", dateFilterPlaceholder = "Choose a date";
function clearDateFilter(){
  dateFilter = "";
  $("#dp-button").text(dateFilterPlaceholder);
  $("#mylist").filterable("refresh");
}
function matchOrDate(idx, searchValue){
  var ret = false;
  if(dateFilter !== "") {
    var filtdate = $(this).data("datefilter") || "";
    if ((filtdate != dateFilter)) {
    	ret = true; //filter this one out
    }
  }
  if (searchValue && searchValue.length > 0) {
      searchValue = searchValue.toLowerCase();
      var filttext = $(this).data("filtertext").toLowerCase() || "";
      if (filttext.indexOf(searchValue) < 0) {
          ret = true; //filter this one out
      }      
  }    
  return ret;
}
$(document).on("pagecreate", "#page-one", function() {
  $("#datepicker").datepicker({
    onSelect: function(dateText) {
      var date = $(this).datepicker("getDate");
      var d = date.getDate(), m = date.getMonth() + 1, y = date.getFullYear();
      dateFilter = "" + y + "-" + (m > 9 ? m : "0" + m) + "-" + (d > 9 ? d : "0" + d);
      $("#dp-popup").popup("close");
      $("#dp-button").text(dateText);
      $("#mylist").filterable("refresh");
    }
  });
  $("#mylist").filterable("option", "filterCallback", matchOrDate);
});

/*
 * jQuery Mobile: jQuery UI Datepicker Monkey Patch
 * http://salman-w.blogspot.com/2014/03/jquery-ui-datepicker-for-jquery-mobile.html
 */
(function() {
  // use a jQuery Mobile icon on trigger button
  $.datepicker._triggerClass += " ui-btn ui-btn-right ui-icon-carat-d ui-btn-icon-notext ui-corner-all";
  // replace jQuery UI CSS classes with jQuery Mobile CSS classes in the generated HTML
  $.datepicker._generateHTML_old = $.datepicker._generateHTML;
  $.datepicker._generateHTML = function(inst) {
    return $("<div></div>").html(this._generateHTML_old(inst))
      .find(".ui-datepicker-header").removeClass("ui-widget-header ui-helper-clearfix").addClass("ui-bar-inherit").end()
      .find(".ui-datepicker-prev").addClass("ui-btn ui-btn-left ui-icon-carat-l ui-btn-icon-notext").end()
      .find(".ui-datepicker-next").addClass("ui-btn ui-btn-right ui-icon-carat-r ui-btn-icon-notext").end()
      .find(".ui-icon.ui-icon-circle-triangle-e, .ui-icon.ui-icon-circle-triangle-w").replaceWith(function() {
        return this.childNodes;
      }).end()
      .find("span.ui-state-default").removeClass("ui-state-default").addClass("ui-btn").end()
      .find("a.ui-state-default.ui-state-active").removeClass("ui-state-default ui-state-highlight ui-priority-secondary ui-state-active").addClass("ui-btn ui-btn-active").end()
      .find("a.ui-state-default").removeClass("ui-state-default ui-state-highlight ui-priority-secondary").addClass("ui-btn").end()
      .find(".ui-datepicker-buttonpane").removeClass("ui-widget-content").end()
      .find(".ui-datepicker-current").removeClass("ui-state-default ui-priority-secondary").addClass("ui-btn ui-btn-inline ui-mini").end()
      .find(".ui-datepicker-close").removeClass("ui-state-default ui-priority-primary").addClass("ui-btn ui-btn-inline ui-mini").end()
      .html();
  };
  // replace jQuery UI CSS classes with jQuery Mobile CSS classes on the datepicker div, unbind mouseover and mouseout events on the datepicker div
  $.datepicker._newInst_old = $.datepicker._newInst;
  $.datepicker._newInst = function(target, inline) {
    var inst = this._newInst_old(target, inline);
    if (inst.dpDiv.hasClass("ui-widget")) {
      inst.dpDiv.removeClass("ui-widget ui-widget-content ui-helper-clearfix").addClass(inline ? "ui-content" : "ui-content ui-overlay-shadow ui-body-a").unbind("mouseover mouseout");
    }
    return inst;
  };
})();

/*
 * jQuery Mobile: jQuery UI Datepicker Monkey Patch
 * http://salman-w.blogspot.com/2014/03/jquery-ui-datepicker-for-jquery-mobile.html
 */
.ui-datepicker {
  display: none;
}
/* set height and left/right margin to accomodate prev/next icons */
.ui-datepicker-header {
  position: relative;
  padding: 0.3125em 2.0625em;
  line-height: 1.75em;
  text-align: center;
}
.ui-datepicker-header .ui-btn {
  margin: -1px 0 0 0;
}
/* fixed width layout for calendar; cells are fixed width */
.ui-datepicker-calendar {
  border-collapse: collapse;
  line-height: 2;
}
.ui-datepicker-calendar .ui-btn {
  margin: 0;
  padding: 0;
  width: 2em;
  line-height: inherit;
}
.ui-datepicker-today .ui-btn {
  text-decoration: underline !important;
}
.ui-datepicker-days-cell-over .ui-btn {
  border-color: inherit !important;
}
.ui-datepicker-buttonpane .ui-btn {
  float: left;
  margin: 0.5em 0 0;
  padding: 0.5em 1em;
}
.ui-datepicker-buttonpane .ui-btn:last-child {
  float: right;
}
/* class that can be added to datepicker <input> element's wrapper; makes room for trigger button */
.dp-input-button-wrap {
  position: relative;
  padding-right: 2.5em;
}
.dp-input-button-wrap .ui-btn {
  top: 0.1875em;
  margin: 0;
}

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
  <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css">
  <script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
  <script src="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.js"></script>
</head>
<body>
  <div id="page-one" data-role="page">
    <div data-role="header" data-position="fixed">
      <h1>Filter events</h1>
    </div>
    <div role="main" class="ui-content">
      <div class="ui-grid-a">
          <div class="ui-block-a"><a id="dp-button" href="#dp-popup" data-rel="popup" data-position-to="window" class="ui-btn ui-corner-all ui-icon-calendar ui-btn-icon-left ui-mini" data-transition="pop">Choose date</a></div>
          <div class="ui-block-b"><a id="clear-date-button" href="#" class="ui-btn ui-corner-all ui-icon-delete ui-btn-icon-left ui-mini" onclick="clearDateFilter(); return false" rel="external">Clear date filter</a></div>
      </div>
      <ul data-role="listview" data-inset="true" data-filter="true" id="mylist" name="mylist" >
        <li data-filtertext="Surfa på internet Mellangård Markaryd (arrangör)" data-datefilter="2017-03-09">
          <a href="addaktivitet.asp?id=2244" data-ajax="false">
          <h3>Surfa på internet</h3>
          <p><strong>Ort: Markaryd</strong></p>
          <p>Arrangör: 1</p>
          <p class="ui-li-aside">
            <strong>Datum: 2017-03-09<br>Tider: 13.30 - 16.00</strong>
          </p>
        </a>
      </li>
      <li data-filtertext="Bingo Stig Inn Strömsnäsbruk (arrangör)" data-datefilter="2017-03-09">
        <a href="addaktivitet.asp?id=2252" data-ajax="false">
          <h3>Bingo</h3>
          <p><strong>Ort: Strömsnäsbruk</strong></p>
          <p>Arrangör: 1</p>
          <p class="ui-li-aside">
            <strong>Datum: 2017-03-09<br>Tider: 13.30 - 16.00</strong>
          </p>
        </a>
      </li>
      <li data-filtertext="Filmafton Mellangård Markaryd (arrangör)" data-datefilter="2017-03-13">
        <a href="addaktivitet.asp?id=2245" data-ajax="false">
          <h3>Filmafton</h3>
          <p><strong>Ort: Markaryd</strong></p>
          <p>Arrangör: 1</p>
          <p class="ui-li-aside">
            <strong>Datum: 2017-03-13<br>Tider: 16.00 - 19.30</strong>
          </p>
        </a>
      </li>
    </ul>
    </div>
    <div data-role="footer" data-position="fixed">
      <h1>Footer</h1>
    </div>
    <div data-role="popup" id="dp-popup" data-theme="a" class="ui-corner-all">
      <div id="datepicker"></div>
    </div>
  </div>
</body>
</html>

信用：

关于datepicker：我在示例中使用jQuery ui datepicker salman arshad仅仅是因为我喜欢它，请随时使用您想要的任何插件，或者独自风格的jquery-ui下载，它不，很重要。

Mutiple Filter是从这里开始的伟大ezanker的想法：带有多个过滤器的jQuery Mobile可过滤列表。

请，note 一边动态列出项目，否则什么都不会起作用。