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jquery - center an element

Posted on 2011-09-22
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345 Views
Last Modified: 2012-06-27
Is there a slick way to have jquery center the selected element?

 if($('span[id*="lblCatNameID"]'))
        {        
            this.css("position", "absolute");
            this.css("top", ($(window).height() - this.height()) / 2 + $(window).scrollTop() + "px");
            this.css("left", ($(window).width() - this.width()) / 2 + $(window).scrollLeft() + "px");
            return this;
        }



seems not to work
0
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Question by:Tom Knowlton
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3 Comments
 
LVL 40

Accepted Solution

by:
gurvinder372 earned 250 total points
ID: 36584834
assuming that 'this' object handle you already have for the element to be centered. And it needs to be centered inside the window, not necessarily its parent

function centerThis(obj)
{
 var winHeight = $(window).height();
 var winWidth = $(window).width();
 obj.css("position", "absolute");
 obj.css("top", ( winHeight - this.height( ) ) / 2  + "px" ) ;
 obj.css("left", ( winWidth - this.width( ) ) / 2  + "px" );
}
0
 
LVL 17

Assisted Solution

by:sonawanekiran
sonawanekiran earned 250 total points
ID: 36585232
Check this



<html>
  <head>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js" type="text/javascript"></script>
  <script>
  $(document).ready(function(){
   $('span[id*="lblCatNameID"]').center();
  });
  
  
  (function($){
    $.fn.extend({
        center: function () { alert("DD");
            return this.each(function() {
                var top = ($(window).height() - $(this).outerHeight()) / 2;
                var left = ($(window).width() - $(this).outerWidth()) / 2;
                $(this).css({position:'absolute', margin:0, top: (top > 0 ? top : 0)+'px', left: (left > 0 ? left : 0)+'px'});
            });
        }
    }); 
})(jQuery);


  </script>
  <title>Kiran Test</title>
  </head>
  <body>
   
   <span id="lblCatNameID"><h1>Centre Element<h1></span>   

  </body>
  </html>

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0
 
LVL 5

Author Closing Comment

by:Tom Knowlton
ID: 36588082
thx
0

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