javascript - 如何使用 jQuery 从 元素内部获取值并将其放入图像属性标记

Question

我想从 H3 元素中获取值并将其放入图像属性中，例如 title 和 alt。请在下面查看我的代码。

$('ul.products').each(function() {
  $(this).find('li h3').each(function() {
    var current = $(this);
    if (current.children().size() > 0) {
      return true;
    }
    console.log($(this).text());
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<ul class="products">
  <li>
    <a href="#">
      <img src="/path/" title="(Get value from h3)" alt="(Get value from h3)">
    </a>
    <h3>Mytitle1</h3> 
  </li>
  <li>
    <a href="#">
      <img src="/path/" title="(Get value from h3)" alt="(Get value from h3)">
    </a>
    <h3>Mytitle2</h3> 
  </li>
  <li>
    <a href="#">
      <img src="/path/" title="(Get value from h3)" alt="(Get value from h3)">
    </a>
    <h3>Mytitle3</h3> 
  </li>
</ul>

Answer 1

$(function() {
  $('.products li').each(function() {
    var item = $(this);
    var text = item.find('h3').text();
    
    item.find('img').attr({
      'title': text,
      'alt': text
    });
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<ul class="products"> 
    <li> 
        <a href="#"><img src="/path/" title="(Get value from h3)" alt="(Get value from h3)"> </a> 
        <h3>Mytitle1</h3> 
    </li>
	<li> 
    	<a href="#"><img src="/path/" title="(Get value from h3)" alt="(Get value from h3)"> </a> 
    	<h3>Mytitle2</h3> 
    </li> 
    <li> 
        <a href="#"><img src="/path/" title="(Get value from h3)" alt="(Get value from h3)"> </a> 
        <h3>Mytitle3</h3> 
    </li> 
</ul>