Use jQuery to Wrap Element Groups

Question

I have a list of elements, and I want to use heading separators to separate them after loading pages. So the code below

<div class="header">Header 1</div>
<div class='test'>Test 1</div>
<div class='test'>Test 2</div>
<div class='test'>Test 3</div>
<div class="header">Header 2</div>
<div class='test'>Test 4</div>
<div class='test'>Test 5</div>
<div class='test'>Test 6</div>
<div class='test'>Test 7</div>
<div class='test'>Test 8</div>
<div class="header">Header 3</div>
<div class='test'>Test 9</div>
<div class='test'>Test 10</div>
<div class='test'>Test 11</div>
<div class='test'>Test 12</div>
<div class="header">Header 4</div>
<div class='test'>Test 13</div>
<div class='test'>Test 14</div>

Would

<div class='wrap'>
<div class="header">Header 1</div>
<div class='test'>Test 1</div>
<div class='test'>Test 2</div>
<div class='test'>Test 3</div>
</div>
<div class='wrap'>
<div class="header">Header 2</div>
<div class='test'>Test 4</div>
<div class='test'>Test 5</div>
<div class='test'>Test 6</div>
<div class='test'>Test 7</div>
<div class='test'>Test 8</div>
</div>
<div class='wrap'>
<div class="header">Header 3</div>
<div class='test'>Test 9</div>
<div class='test'>Test 10</div>
<div class='test'>Test 11</div>
<div class='test'>Test 12</div>
</div>
<div class='wrap'>
<div class="header">Header 4</div>
<div class='test'>Test 13</div>
<div class='test'>Test 14</div>
</div>

Any ideas? Thanks in advance.

Answer 1

What you ask is a scary idea . This is what you need to do on the server side. (There are always exceptions).

In doing so, the following code should do what you ask.

$('.header').each(function() {
  var head = $(this);

  if(!head.parent().hasClass('wrap')) {
    head.before('div class="wrap"></div>');

    var wrap = head.prev();
    var curr = head;

    do {
      var currEl = curr;
      curr = curr.next();

      currEl.appendTo(wrap);
    } while(curr.length > 0 && !curr.hasClass('header'));
  }
});

Note:

I usually don't develop jQuery, so sorry if I don't follow the standard jQuery execution methods.

Answer 2

jQuery v1.4, nextUntil(), - :

var split_at = 'div.header';
$(split_at).each(function() {
  $(this).add($(this).nextUntil(split_at)).wrapAll("<div class='wrap'/>");
});

Answer 3

. , (EDIT: , ? , - ), :

jQuery(function($){ 

  var $everything = $('.header,.test'); 
  var splitAtHeaders = []; 

  $everything.each(function(index){ 
    var $item = $(this); 
    if ('header'===$item.attr('className') || !splitAtHeaders.length) { 
      splitAtHeaders[splitAtHeaders.length] = []; 
    } 
    splitAtHeaders[splitAtHeaders.length-1].push($item); 
  }); 

  $.each(splitAtHeaders, function(){ 
    var currentWrapper = null; 
    $.each(this, function(index){ 
      if (0===index || !currentWrapper) { 
        currentWrapper = this.wrap('<div class="wrap"></div>'); 
      } 
      else { 
        currentWrapper.append(this); 
      } 
    }); 
  }); 

}); 

: http://jsbin.com/ojoqi/edit

, , , .

EDIT: Andrew. :

$('.header').each(function() {
  var next = $(this).next();
  var head = $(this).wrap('<div class="wrap"></div>');
  while (next && next.hasClass('test')) {
    var curr = next;
    next = next.next();
    head.append(curr);
  }    
});

Answer 4

: . , - , , id.

$("div.header").each(function() {
    var $header = $(this);

    var $tests = $.grep(
        $("div.test"),
        function(n) {
            return $(n).prevAll("div.header").text() == $header.text();
        });

    $.merge($header, $tests).wrapAll($("<div class='wrap'>"));
});

Answer 5

:

var divs = $( 'div' );
var headers = divs.filter( '.header' );

if ( headers.length != 0 ) {
  var start = 0;
  var wrapper = $( '<div class="wrap" />' );

  headers.each( function() {
    var pos = divs.index( this );
    divs.slice( start, pos - 1 ).wrapAll( wrapper.clone() );
    start = pos;
  } );

  divs.slice( start ).wrapAll( wrapper.clone() );
}

Answer 6

, http://jquery.kidsil.net/next-and-prev-wrap/