CODEWITHSUNDEEP
javascriptjqueryhtmljquery-selectors
Vucko
Vucko

Reputation: 20834

Select nearest element by class on the same(or not) level

How to select the nearest element with a specific class that is or may not be on the same level as the clickable element?

For example, lets says that this is the output:

<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>

I want when I click on p.click that it will find the nearest p.change-on-click element.

Just like this, but unfortunately I can't change the 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>

Here's a fiddle with the second situation

Upvotes: 5

Views: 2445

Answers (4)

Dean North
Dean North

Reputation: 3780

You can do this with jQuery without making extra functions and stuff like this...

$('.click').on('click', function(){
    $('.change-on-click', $(this).parents('div')).css('color', 'red');
});
<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>

Upvotes: 0

PeterKA
PeterKA

Reputation: 24638

Is this what you're looking for? ( Locate the target element via a while loop )

$('.click').on('click', function() {
    var coc = $(this);
    while( !coc.prev().is( '.change-on-click' ) ) {
        coc = coc.parent();
    }
    coc.prev().css('color','red');
});


$('.click').on('click', function() {
    var coc = $(this);
    while( !coc.prev().is( '.change-on-click' ) ) {
        coc = coc.parent();
    }
    coc.prev().css('color','red');
});
<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>

OR (Using a jQuery plugin)

$('p.click').on('click', function(){
    $(this).changeOnClick();
});

$.fn.changeOnClick = function() {
  return this.each(function() {
    var near = $(this);
    while( !near.prev().is('.change-on-click') ) {
      near = near.parent();
    }
    near.prev().css('color','red');
  });
}
<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>

UPDATE

The following version should work for cases where the target element is before or after the clicked element:

$('.click').on('click', function() {
    var coc = $(this);
    while( !coc.prev().is( '.change-on-click' ) && !coc.next().is( '.change-on-click' ) ) {
        coc = coc.parent();
    }
    coc.prev().add( coc.next() ).filter( '.change-on-click' ).css('color','red');
});

DEMO

Upvotes: 1

Travis J
Travis J

Reputation: 82287

This is going to require a custom approach since the jQuery API does not support that type of searching. Basically, just iterate through the parent nodes until you find the click-on-change element.

$('.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>

Upvotes: 3

Verhaeren
Verhaeren

Reputation: 1661

You can do it this way:

$('p.click').each(function(i){
    $(this).on("click", function(){$('.change-on-click').eq(i).css('color', 'red');});
});

http://jsfiddle.net/4ofajqxa/1/

Upvotes: 2

Related Questions