在同一(或非)级别上按类选择最近的元素

Question

如何选择最近的一个特定元素class是或可能不在同一水平可点击元素？

例如,让我们说这是输出:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div>
    <div>
        <p class="change-on-click">A</p>
        <p class="click">Click on this will change A</p>
    </div>
</div>

<div>
    <div>
        <p class="change-on-click">B</p>
        <div>
            <p class="click">Click on this will change B</p>
        </div>
    </div>
</div>

<div>
    <div>
        <p class="change-on-click">C</p>
        <div>
            <div>
                <p class="click">Click on this will change C</p>
            </div>
        </div>
    </div>
</div>

<div>
    <div>
        <div>
            <div>
                <p class="click">Click on this will change D</p>
            </div>
            <p class="change-on-click">D</p>
        </div>
    </div>
</div>

<div>
    <div>
        <div>
            <div>
                <p class="click">Click on this will change E</p>
            </div>
        </div>
    </div>
    <p class="change-on-click">E</p>
</div>

我希望当我点击p.click它时会找到最近的p.change-on-click元素.

---

就像这样,但不幸的是我无法改变HTML.

$('.click').on('click', function(){
    $(this).closest('.parent').find('.change-on-click').css('color', 'red');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="parent">
    <div>
        <p class="change-on-click">A</p>
        <p class="click">Click on this will change A</p>
    </div>
</div>

<div class="parent">
    <div>
        <p class="change-on-click">B</p>
        <div>
            <p class="click">Click on this will change B</p>
        </div>
    </div>
</div>

<div class="parent">
    <div>
        <p class="change-on-click">C</p>
        <div>
            <div>
                <p class="click">Click on this will change C</p>
            </div>
        </div>
    </div>
</div>

<div class="parent">
    <div>
        <div>
            <div>
                <p class="click">Click on this will change D</p>
            </div>
            <p class="change-on-click">D</p>
        </div>
    </div>
</div>

<div class="parent">
    <div>
        <div>
            <div>
                <p class="click">Click on this will change E</p>
            </div>
        </div>
    </div>
    <p class="change-on-click">E</p>
</div>

这是第二种情况的小提琴

Answer 1

这将需要一种自定义方法，因为 jQuery API 不支持这种类型的搜索。基本上，只需迭代父节点，直到找到单击更改元素。

$('.click').click(function(){
  var node = this;
  while(node != document.body){
   var target = $(node).find('.change-on-click')
   if( target.length == 0 ){
    node = node.parentNode;
   }else{
    target.css('color','red');
    return;
   }
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div>
    <div>
        <p class="change-on-click">A</p>
        <p class="click">Click on this will change A</p>
    </div>
</div>

<div>
    <div>
        <p class="change-on-click">B</p>
        <div>
            <p class="click">Click on this will change B</p>
        </div>
    </div>
</div>

<div>
    <div>
        <p class="change-on-click">C</p>
        <div>
            <div>
                <p class="click">Click on this will change C</p>
            </div>
        </div>
    </div>
</div>