15

我想显示“查看全部”类型的链接，只有当 div 中的行达到 4 行时。

HTML

<div>
    3PAS-Pub-IO-doubleclick.net-LI, ATOM_DFP_Pub_LI, AUG12_Zynga.com_MafiaWars2_0.10$_CPM,
    ATOM_Macro_Jivox Testing,   Sep 11 Head and Shoulder Innovation - Do Not Bill, 123Greetings - IN Do Not Pay_Second, 
    July 11_Affinity.com_Fiat Linea_CPL 55, 3PAS-Pub-IO-atdmt.com-LI, 2_Affinity_RealEstate_CPC_2.8_INR_2nd,
    AUG12_Zynga.com_treasureIsle_0.10$_CPM, AUG12_Zynga.com_theville_0.10$_CPM, 123Greetings - IN Do Not Pay_NonIndia,
    AUG12_Zynga.com_RubyBlast_0.10$_CPM, 12_Affinity_Education_CPC_2.8_INR_1st, 728x90_Original, 300x250_TagModified,
    Dec11_ WhyteFort_CPL_INR 45, AUG12_Zynga.com_PetsVille_0.10$_CPM, 123Greetings - IN Do Not Pay_First,
    AUG12_Zynga.com_FishVille_0.10$_CPM, 3PAS-Pub-IO-adfac.net-LI,
    3PAS-Pub-IO-bs.serving-sys.com-LI1, 3PAS-test-pub-IO-li, 160x600_Noscr...
</div>

尝试使用 jquery 子字符串概念，但没有运气，

我试过了

  1. 找到 div 高度

  2. 找到行高

  3. div 高度 / 行高 = 行数

这是代码：

var divheight = $("#startegy-sections-targeting-exclude").height();
var lineheight = $("#startegy-sections-targeting-exclude").css('line-height');
console.log(Math.round(divheight/parseInt(lineheight)));

但是没有成功，你们能帮帮我吗

4

3 回答 3

11

您的代码的问题是，如果您不指定行高，则line-height默认值为normal.

$(function() {
  var divheight = $("#startegy-sections-targeting-exclude").height();
  var lineheight = parseInt($("#startegy-sections-targeting-exclude").css('line-height'), 10);
  console.log("Number of lines:", Math.round(divheight / lineheight));
});
#startegy-sections-targeting-exclude {
  line-height: 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="startegy-sections-targeting-exclude">
  3PAS-Pub-IO-doubleclick.net-LI, ATOM_DFP_Pub_LI, AUG12_Zynga.com_MafiaWars2_0.10$_CPM, ATOM_Macro_Jivox Testing, Sep 11 Head and Shoulder Innovation - Do Not Bill, 123Greetings - IN Do Not Pay_Second, July 11_Affinity.com_Fiat Linea_CPL 55, 3PAS-Pub-IO-atdmt.com-LI,
  2_Affinity_RealEstate_CPC_2.8_INR_2nd, AUG12_Zynga.com_treasureIsle_0.10$_CPM, AUG12_Zynga.com_theville_0.10$_CPM, 123Greetings - IN Do Not Pay_NonIndia, AUG12_Zynga.com_RubyBlast_0.10$_CPM, 12_Affinity_Education_CPC_2.8_INR_1st, 728x90_Original, 300x250_TagModified,
  Dec11_ WhyteFort_CPL_INR 45, AUG12_Zynga.com_PetsVille_0.10$_CPM, 123Greetings - IN Do Not Pay_First, AUG12_Zynga.com_FishVille_0.10$_CPM, 3PAS-Pub-IO-adfac.net-LI, 3PAS-Pub-IO-bs.serving-sys.com-LI1, 3PAS-test-pub-IO-li, 160x600_Noscr...
</div>

于 2013-01-17T10:00:37.670 回答
4

您可以使用 jQuery 的 ThreeDots 插件：http: //tpgblog.com/2009/12/21/threedots-the-jquery-ellipsis-plugin/

调用ThreeDots()您的<div>时，设置max_rows为4。只需查看该页面上的示例，您还可以设置自定义“阅读更多”链接。但请注意，您必须将文本包装成额外的<span>，如下所示：

<div class="text_here">
    <span class="ellipsis_text">
        your text
    </span>
</div>

... jQuery 代码行将是：

$('.text_here').ThreeDots({ max_rows:4 });
于 2013-01-17T09:56:24.917 回答
1

$("#startegy-sections-targeting-exclude").css('line-height');如果您没有指定行高，则不应使用。在javascript中你可以使用这个：

var element = document.getElementById('startegy-sections-targeting-exclude');
var lineheight = document.defaultView.getComputedStyle(element, null).getPropertyValue("lineHeight");
于 2015-07-22T18:44:26.087 回答