用多个框替换文本 [英] Replace text with multiple boxes

问题描述

我从jQuery开始，我需要一个项目.

I'm starting with jQuery and I need this is a project.

例如，我有这个:

<ul id="grid">
  <li class="box1">Lorem ipsum dolor sit amet!</li>
  <li class="box2">Lorem ipsum dolor sit amet!</li>
  <li class="box3">Lorem ipsum dolor sit amet!</li>
</ul>

网格项目的信息

<div class="box_info_1">Info for grid item</div>
<div class="box_info_2">Info for grid item</div>
<div class="box_info_3">Info for grid item</div>

还有一个div:

<div id="promo">I want to set grid info here</div>

我想要完成的是，当我将鼠标悬停在一个框上时，促销div将内容替换为相应的info_box

What i want to accomplish is when I hover over a box, the promo div replaces the content with the corresponding info_box

因此，当我将鼠标悬停在box1上时，我想在促销div中添加box_info_1的内容

So when I hover over box1, i want the content of box_info_1 in the promo div

推荐答案

我喜欢使用数据元素选择器，所以可以！

I love to use data element selectors, and so can you!

数据元素是HTML5标准的一部分，所有现代浏览器中使用.此外，jQuery定义了一个简单的标准，可以通过 $ .data()函数读写数据属性.下面的示例将CSS选择器存储在每个元素的数据元素中，然后在实现悬停处理程序时对其进行引用.

Data elements are part of the HTML5 standard, seen here, allowing a user to associate ad-hoc data with any element. They are available in all modern browsers. Further, jQuery defines a simple standard to read and write to data attributes through the $.data() function. The following example stores a CSS-selector in a data-element for each element, and then references it when implementing the hover handler.

首先，告诉每个盒子"将其分配给哪个box-info元素(我们将在data属性中使用CSS选择器)，如下所示:

First, tell each "box" which box-info element it is assigned to (we'll use a CSS-selector in a data attribute), as follow:

 <ul id="grid">
   <li class="box box1" data-item=".box_info_1">Lorem ipsum dolor sit amet!</li>
   <li class="box box2" data-item=".box_info_2">Lorem ipsum dolor sit amet!</li>
   <li class="box box3" data-item=".box_info_3">Lorem ipsum dolor sit amet!</li>
 </ul>

然后使用以下JavaScript获取元素并替换promo的内容:

Then use the following JavaScript to get the element and replace the contents of promo:

 $('.box').hover(function() {
   $('#promo').text($($(this).data('item')).text());
 });

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