Question

我对JQuery UI tooltip widget编写了以下扩展名，该扩展名允许工具提示具有从HTMLElement的html获取其内容的上下文。但是，我的'title'属性是经过硬编码的，但是我想使用options.items中定义的任何属性。例如，如果他们希望工具提示使用alt标签，那么扩展将使用html内容填充该属性。

我也在寻找一种可以正确转义contentId字符串串联的jquery ui方法

$(function() {
    (function() {
        var cache = {};
        $.widget("custom.tooltipContent", $.ui.tooltip, {
            _init: function() {
                this._super();

                this.options.content = function() {
                    return $(this).attr("title");
                };

                this.element.attr("title", function() {
                    var contentId = $(this).attr("data-tooltip-content");

                    if (!cache[contentId]) {
                        cache[contentId] = $("[data-tooltip-content-id=" + contentId + "]").remove().html();
                    }

                    return cache[contentId];
                });
            }
        });
    })();
});

http://jsfiddle.net/5d7sqx89/1/

Answer 1

我建议您使用一个新选项来代替标题或项目选项。您可以将其称为itemsData。这是为了避免将项目的内容解析为选择器。

$("span").tooltipContent({
      itemsData: "data-tooltip-content",
      show: {
          effect: "slideDown",
          delay: 50
      }
 })

itemsData：根据您的模式显示的数据选择器：

     data-tooltip-content  --> data-tooltip-content-id

(function () {
    $.widget("custom.tooltipContent", $.ui.tooltip, {
        _init: function () {
            this._super();
            var _self = this;
            var datasetName = 'tooltipContent';

            // this in order to fire always content function...
            _self.options.items = (_self.options.items.indexOf('[title]') != -1) ? '[data-tooltip-content]' :  _self.options.items;

            // normalize itemsData
            _self.options.itemsData = _self.options.itemsData || "data-tooltip-content";

            // get the html to be displayed later and save it into a data attribute
            var contentSelector = "[" + _self.options.itemsData + "-id=" + _self.element.data(datasetName) + "]";
            _self.element.data(datasetName, $(contentSelector).html());

            this.options.content = function () {
                return _self.element.data(datasetName);
            };
        }
    });
})();

$("span").tooltipContent({
    itemsData: "data-tooltip-content",
    show: {
        effect: "slideDown",
        delay: 50
    }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://code.jquery.com/ui/1.12.0/themes/smoothness/jquery-ui.css" rel="stylesheet"/>
<script src="https://code.jquery.com/ui/1.12.0/jquery-ui.js"></script>


<span id="test1" data-tooltip-content="x">Help 1</span>
<span id="test2" data-tooltip-content="x">Help 1</span>
<span id="test3" data-tooltip-content="y">Help 2</span>
<span id="test4" data-tooltip-content="y">Help 2</span>

<div style="display:none" data-tooltip-content-id="x">
    Shared content for <b>help 1</b>
</div>

<div style="display:none" data-tooltip-content-id="y">
    <table style="width:100%">
        <tr>
            <th>Firstname</th>
            <th>Lastname</th>
            <th>Age</th>
        </tr>
        <tr>
            <td>Jill</td>
            <td>Smith</td>
            <td>50</td>
        </tr>
        <tr>
            <td>Eve</td>
            <td>Jackson</td>
            <td>94</td>
        </tr>
    </table>
</div>

另一种方法可以基于引导按钮如何打开模式。现在，您的 data-tooltip-content 属性必须包含要显示的数据的选择器：

<span id="test1" data-tooltip-content="#x">Help 1</span>
<span id="test2" data-tooltip-content="#x">Help 1</span>
<span id="test3" data-tooltip-content="#y">Help 2</span>
<span id="test4" data-tooltip-content="#y">Help 2</span>

<div id="x" style="display:none">
    Shared content for <b>help 1</b>
</div>

<div id="y" style="display:none">
    <table style="width:100%">
.......................

现在的代码更简单了。

(function () {
    $.widget("custom.tooltipContent", $.ui.tooltip, {
        _init: function () {
            this._super();
            var _self = this;
            var datasetName = 'tooltipContent';

            // this in order to fire always content function...
            _self.options.items = (_self.options.items.indexOf('[title]') != -1) ? '[data-tooltip-content]' :  _self.options.items;

            // get the html to be displayed later and save it into a data attribute
            var html = '';
            if (_self.options.itemsData === undefined) {
                html = _self.element.attr('title') || '';
            } else {
                html = $(_self.element.data(datasetName)).html();
            }

            _self.element.data(datasetName, html);

            this.options.content = function () {
                return _self.element.data(datasetName);
            };
        }
    });
})();


$("span").tooltipContent({
    items: "span[id^=test]", // optional
    itemsData: "data-tooltip-content",
    show: {
        effect: "slideDown",
        delay: 50
    }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://code.jquery.com/ui/1.12.0/themes/smoothness/jquery-ui.css" rel="stylesheet"/>
<script src="https://code.jquery.com/ui/1.12.0/jquery-ui.js"></script>


<span id="test1" data-tooltip-content="#x">Help 1</span>
<span id="test2" data-tooltip-content="#x">Help 1</span>
<span id="test3" data-tooltip-content="#y">Help 2</span>
<span id="test4" data-tooltip-content="#y">Help 2</span>

<div id="x" style="display:none">
    Shared content for <b>help 1</b>
</div>

<div id="y" style="display:none">
    <table style="width:100%">
        <tr>
            <th>Firstname</th>
            <th>Lastname</th>
            <th>Age</th>
        </tr>
        <tr>
            <td>Jill</td>
            <td>Smith</td>
            <td>50</td>
        </tr>
        <tr>
            <td>Eve</td>
            <td>Jackson</td>
            <td>94</td>
        </tr>
    </table>
</div>

Answer 2

我不确定这是否需要一个小部件。我将执行以下操作：

$(function() {
  $("span").tooltip({
    items: "[data-tooltip-rel]",
    content: function() {
      var id = $(this).attr("data-tooltip-rel");
      var cont = $("[data-tooltip-content-id='" + id + "']");
      return cont.html();
    }
  });
});

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<span id="test" data-tooltip-rel="x">Help 1</span>
<span data-tooltip-rel="x">Help 1</span>
<span data-tooltip-rel="y">Help 2</span>
<span data-tooltip-rel="y">Help 2</span>

<div style="display:none" data-tooltip-content-id="x">
  Shared content for <b>help 1</b>
</div>

<div style="display:none" data-tooltip-content-id="y">
  <table style="width:100%">
    <tr>
      <th>Firstname</th>
      <th>Lastname</th>
      <th>Age</th>
    </tr>
    <tr>
      <td>Jill</td>
      <td>Smith</td>
      <td>50</td>
    </tr>
    <tr>
      <td>Eve</td>
      <td>Jackson</td>
      <td>94</td>
    </tr>
  </table>
</div>

如果您需要自定义小部件，可以执行此操作。

$(function() {
  $.widget("custom.tooltipContent", $.ui.tooltip, {
    options: {
      items: "[data-tooltip-rel]",
      content: function() {
        return $("[data-tooltip-content-id='" + $(this).attr("data-tooltip-rel") + "']").html();
      }
    }
  });
  $("span").tooltipContent();
});

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<span id="test" data-tooltip-rel="x">Help 1</span>
<span data-tooltip-rel="x">Help 1</span>
<span data-tooltip-rel="y">Help 2</span>
<span data-tooltip-rel="y">Help 2</span>

<div style="display:none" data-tooltip-content-id="x">
  Shared content for <b>help 1</b>
</div>

<div style="display:none" data-tooltip-content-id="y">
  <table style="width:100%">
    <tr>
      <th>Firstname</th>
      <th>Lastname</th>
      <th>Age</th>
    </tr>
    <tr>
      <td>Jill</td>
      <td>Smith</td>
      <td>50</td>
    </tr>
    <tr>
      <td>Eve</td>
      <td>Jackson</td>
      <td>94</td>
    </tr>
  </table>
</div>

希望有帮助。

使用options.items vs title的jQuery UI工具提示扩展

2 个答案: