Popper.js: How to close popup when clicking outsid

问题:

I'm using Popper.js to show a popup elment having the class .js-share-cf-popover when clicking elements with class .js-share-cf-btn.

But I want the popup to close only when I click outside of it. Here my actual code that show the popup:

var reference = $('.js-share-cf-btn');
var popover = $('.js-share-cf-popover');
popover.hide();

$(document).on('click', reference, function(e) {
  e.preventDefault();

  popover.show();

  var popper = new Popper(reference, popover, {
    placement: 'top',
  });
});

I found something here but I can't get it works

Here My jsfiddle

回答1:

You can achieve this , by removing event delegation and check the target on event click by using the .is() , ( compare e.target if it equals to reference btn otherwise hide popup )

See fiddle

Added snippet as your code :

also made change in the Popper indtance you should pass the current click js-share-cf-btn so the $(e.target) element

$(function() {
  var reference = $('.js-share-cf-btn');
  var popover = $('.js-share-cf-popover');
  popover.hide();

  $(document).on('click touchend', function(e) {
    var target = $(e.target);
    // ne need to reshow and recreate poper when click over popup so return;
    if(target.is(popover)) return;
    if (target.is(reference)) {
      e.preventDefault();

      popover.show();

      var popper = new Popper(target, popover, {
        placement: 'top',
      });
    }else {
      popover.hide();
    }
  });

});

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

.section {
  background: #fff;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
  margin-bottom: 20px;
}

.share-popover {
  background: red;
  color: white;
  padding: 10px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<div class="section">
  <p>Section 1</p>
  <a href="#" class="js-share-cf-btn">This is the trigger</a>
</div>

<div class="section">
  <p>Section 2</p>
  <a href="#" class="js-share-cf-btn">This is the trigger</a>
</div>

<div class="section">
  <p>Section 3</p>
  <a href="#" class="js-share-cf-btn">This is the trigger</a>
</div>

<div class="share-popover js-share-cf-popover">
  This is the popup
</div>

回答2:

Something like this should do the trick (by checking the target when you are clicking somewhere):

$(function() {
  var ref = $('.js-share-cf-btn');
  var popover = $('.js-share-cf-popover');
  popover.hide();

  $(document).on('click', function(e) {
    var target = $(e.target);
    if (target.is(ref) || target.is(popover) ) {
      e.preventDefault();
      popover.show();
      var popper = new Popper(ref, popover, {
        placement: 'right',
      });
    }else {
      popover.hide();
    }
  });

});

https://jsfiddle.net/e8aL9tje/

回答3:

For those using React, I created a gist of an HOC that you can attach to any component to close it when clicked outside:

https://gist.github.com/elie222/850bc4adede99650508aba2090cd5da1