Q:

Show/hide div on a click, toggle when clicked outside of the div

This is what I have so far:
For example, when I click on button1, content1 shows, when I click on button2, content1 closes and content2 appears.
That works so far with this code:
    $("#buttons a").click(function(e){
    e.preventDefault();
    var toShow = $(this).attr('href');
    $(".togg").fadeOut();
    $(toShow).fadeIn();
    });

JSFiddle
  What I'm trying to do is keep this function, but add some things: if content1 is already open, toggle it when I click on its button (button1), and also toggle it when clicked outside of the content1 div. In short I want to toggle it when clicked anywhere but the div itself.

A:

As you want to check whether the click is on the element or outside the element, for that you need to check nodeName or tagName or id
$(document).click(function(e) {
  //Check the element is none of the DIVS which we wants prevent.
  if(e.target.id != "content1" && e.target.id != "content2" && e.target.id != "content3")
    {
      //Hide the content div which is visible now.
      $('div.togg:visible').hide();
    }
});

You just need to create a dynamic selector to achieve kind of dynamic toggling function.
$("#buttons a").click(function(e){
    var selector = $('.'+$(this).attr('id'));
    selector.toggle();
    $('div.togg').not(selector).hide();
});

$("#buttons a").click(function(e){
    var selector = $('.'+$(this).attr('id'));
    selector.toggle();
    $('div.togg').not(selector).hide();
});
$(document).click(function(e) {
  //Check the element is none of the DIVS which we wants prevent.
  if(e.target.id != "content1" && e.target.id != "content2" && e.target.id != "content3")
    {
      //Hide the content div which is visible now.
      $('div.togg:visible').hide();
    }
});
.content1 {display:none;}
.content2 {display:none;}
.content3 {display:none;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="buttons">
  <a href="#" id="content1">Div 1</a>
  <a href="#" id="content2">Div 2</a>
  <a href="#" id="content3">Div 3</a>
</div>
<div>
  <div class="content1 togg">1111</div>
  <div class="content2 togg">2222</div>
  <div class="content3 togg">3333</div>
</div>

