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Hiding rows from a sticky table header using jQuery

Posted on 2014-01-13
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Last Modified: 2014-01-13
I'm using a jQuery plugin that will make my table header stick to the top of a users screen when they begin scrolling through my table. Its a pretty simple plugin to implement and works well.

However, as my table header takes up a fair amount of vertical real estate, I'd like for a few of the rows to disappear after a user begins scrolling (and once the header begins to "stick").

Here is an example of the type of table/table header I'm working with.

http://jsfiddle.net/MX8Qy/

Any help would be greatly appreciated. Thanks!
0
Comment
Question by:Adam
  • 2
  • 2
4 Comments
 
LVL 54

Expert Comment

by:Scott Fell, EE MVE
ID: 39777924
I think I have it working here http://jsfiddle.net/rBXvf/1/

I have comments to show my  updates
 // added to add back top part of header
  // added to remove top part of header

$(function(){
    $("table").stickyTableHeaders();
});
/*! Copyright (c) 2011 by Jonas Mosbech - https://github.com/jmosbech/StickyTableHeaders
    MIT license info: https://github.com/jmosbech/StickyTableHeaders/blob/master/license.txt */

;(function ($, window, undefined) {
	'use strict';

	var name = 'stickyTableHeaders';
	var defaults = {
			fixedOffset: 0
		};

	function Plugin (el, options) {
		// To avoid scope issues, use 'base' instead of 'this'
		// to reference this class from internal events and functions.
		var base = this;

		// Access to jQuery and DOM versions of element
		base.$el = $(el);
		base.el = el;

		// Listen for destroyed, call teardown
		base.$el.bind('destroyed',
			$.proxy(base.teardown, base));

		// Cache DOM refs for performance reasons
		base.$window = $(window);
		base.$clonedHeader = null;
		base.$originalHeader = null;

		// Keep track of state
		base.isSticky = false;
		base.leftOffset = null;
		base.topOffset = null;

		base.init = function () {
			base.options = $.extend({}, defaults, options);

			base.$el.each(function () {
				var $this = $(this);

				// remove padding on <table> to fix issue #7
				$this.css('padding', 0);

				base.$originalHeader = $('thead:first', this);
				base.$clonedHeader = base.$originalHeader.clone();

				base.$clonedHeader.addClass('tableFloatingHeader');
				base.$clonedHeader.css('display', 'none');

				base.$originalHeader.addClass('tableFloatingHeaderOriginal');

				base.$originalHeader.after(base.$clonedHeader);

				base.$printStyle = $('<style type="text/css" media="print">' +
					'.tableFloatingHeader{display:none !important;}' +
					'.tableFloatingHeaderOriginal{position:static !important;}' +
					'</style>');
				$('head').append(base.$printStyle);
			});

			base.updateWidth();
			base.toggleHeaders();

			base.bind();
		};

		base.destroy = function (){
			base.$el.unbind('destroyed', base.teardown);
			base.teardown();
		};

		base.teardown = function(){
			if (base.isSticky) {
				base.$originalHeader.css('position', 'static');
			}
			$.removeData(base.el, 'plugin_' + name);
			base.unbind();

			base.$clonedHeader.remove();
			base.$originalHeader.removeClass('tableFloatingHeaderOriginal');
			base.$originalHeader.css('visibility', 'visible');
			base.$printStyle.remove();

			base.el = null;
			base.$el = null;
		};

		base.bind = function(){
			base.$window.on('scroll.' + name, base.toggleHeaders);
			base.$window.on('resize.' + name, base.toggleHeaders);
			base.$window.on('resize.' + name, base.updateWidth);
		};

		base.unbind = function(){
			// unbind window events by specifying handle so we don't remove too much
			base.$window.off('.' + name, base.toggleHeaders);
			base.$window.off('.' + name, base.updateWidth);
			base.$el.off('.' + name);
			base.$el.find('*').off('.' + name);
		};

		base.toggleHeaders = function () {
			base.$el.each(function () {
				var $this = $(this);

				var newTopOffset = isNaN(base.options.fixedOffset) ?
					base.options.fixedOffset.height() : base.options.fixedOffset;

				var offset = $this.offset();
				var scrollTop = base.$window.scrollTop() + newTopOffset;
				var scrollLeft = base.$window.scrollLeft();
   // added to add back top part of header               
                 $('.row-1').show();
                 $('.row-2').show();
				if ((scrollTop > offset.top) && (scrollTop < offset.top + $this.height() - base.$clonedHeader.height())) {
                    
  // added to remove top part of header
                    $('.row-1').hide();
                    $('.row-2').hide();
                    
					var newLeft = offset.left - scrollLeft;
					if (base.isSticky && (newLeft === base.leftOffset) && (newTopOffset === base.topOffset)) {
						return;
					}

					base.$originalHeader.css({
						'position': 'fixed',
						'top': newTopOffset,
						'margin-top': 0,
						'left': newLeft,
						'z-index': 1 // #18: opacity bug
					});
					base.$clonedHeader.css('display', '');
					base.isSticky = true;
					base.leftOffset = newLeft;
					base.topOffset = newTopOffset;

					// make sure the width is correct: the user might have resized the browser while in static mode
					base.updateWidth();
				}
				else if (base.isSticky) {
					base.$originalHeader.css('position', 'static');
					base.$clonedHeader.css('display', 'none');
					base.isSticky = false;
				}
			});
		};

		base.updateWidth = function () {
			if (!base.isSticky) {
				return;
			}
			// Copy cell widths from clone
			var $origHeaders = $('th,td', base.$originalHeader);
			$('th,td', base.$clonedHeader).each(function (index) {

				var width, $this = $(this);

				if ($this.css('box-sizing') === 'border-box') {
					width = $this.outerWidth(); // #39: border-box bug
				} else {
					width = $this.width();
				}

				$origHeaders.eq(index).css({
					'min-width': width,
					'max-width': width
				});
			});

			// Copy row width from whole table
			base.$originalHeader.css('width', base.$clonedHeader.width());
		};

		base.updateOptions = function(options) {
			base.options = $.extend({}, defaults, options);
			base.updateWidth();
			base.toggleHeaders();
		};

		// Run initializer
		base.init();
	}

	// A plugin wrapper around the constructor,
	// preventing against multiple instantiations
	$.fn[name] = function ( options ) {
		return this.each(function () {
			var instance = $.data(this, 'plugin_' + name);
			if (instance) {
				if (typeof options === "string") {
					instance[options].apply(instance);
				} else {
					instance.updateOptions(options);
				}
			} else if(options !== 'destroy') {
				$.data(this, 'plugin_' + name, new Plugin( this, options ));
			}
		});
	};

})(jQuery, window);

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LVL 1

Author Comment

by:Adam
ID: 39778241
Hello again Scott! :) This is pretty much everything I'm looking for, however, I need to keep the header cell that contains the search field.

Also, I added the jQuery code from the plugin I'm using in the fiddle but ideally, I'd rather keep the code I use to hide those rows separate from the plugin code (just in case there are any updates to the plugin).

Sorry, I know I'm just being picky now... ;)
0
 
LVL 54

Accepted Solution

by:
Scott Fell,  EE MVE earned 2000 total points
ID: 39778274
Ok, I did not see that was what you were asking for.

http://jsfiddle.net/mMppa/

I added a new row that is hidden when it starts and contains the search box.  When you scroll, the new row (at the top) shows while the other hides.  I had to set a height for the row-3.  

This gives you a good base to work with and tweak as you need.

<div style="width:3000px">
   some really really wide content goes here
</div>

<table>
   <thead>
       <tr class="search2"><th rowspan="8"><input type="text" placeholder="Search stuff" /></th></tr>
      <tr class="row-1">
          <th rowspan="3"><input type="text" placeholder="Search stuff" /></th>
         <th colspan="8">REMOVE ME!</th>
      </tr>
   
      <tr class="row-2">
         <th colspan="8">REMOVE ME TOO!!!</th>
      </tr>
      <tr class="row-3">
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
         <th>Col</th>
      </tr>
   </thead>
   <tbody>
      <tr>
         <td>
            A.P. Møller...
         </td>
         <td>
            DKK
         </td>
         <td>
            33,220.00
         </td>
         <td>
            760
         </td>
         <td>
            2.34
         </td>
         <td>
            33,140.00
         </td>
         <td>
            33,220.00
         </td>
         <td>
            594
         </td>
         <td>
            19,791,910
         </td>
      </tr>
      <tr>
         <td>
            A.P. Møller...
         </td>
         <td>
            DKK
         </td>
         <td>
            34,620.00
         </td>
         <td>
            640
         </td>
         <td>
            1.88
         </td>
         <td>
            34,620.00
         </td>
         <td>
            34,700.00
         </td>
         <td>
            9,954
         </td>
         <td>
            346,530,246
         </td>
      </tr>
      <tr>
         <td>
            Carlsberg A
         </td>
         <td>
            DKK
         </td>
         <td>
            380
         </td>
         <td>
            0
         </td>
         <td>
            0
         </td>
         <td>
            371
         </td>
         <td>
            391.5
         </td>
         <td>
            6
         </td>
         <td>
            2,280
         </td>
      </tr>
      <tr>
         <td>
            Carlsberg B
         </td>
         <td>
            DKK
         </td>
         <td>
            364.4
         </td>
         <td>
            8.6
         </td>
         <td>
            2.42
         </td>
         <td>
            363
         </td>
         <td>
            364.4
         </td>
         <td>
            636,267
         </td>
         <td>
            228,530,601
         </td>
      </tr>
      <tr>
         <td>
            Chr. Hansen...
         </td>
         <td>
            DKK
         </td>
         <td>
            114.5
         </td>
         <td>
            -1.6
         </td>
         <td>
            -1.38
         </td>
         <td>
            114.2
         </td>
         <td>
            114.5
         </td>
         <td>
            141,822
         </td>
         <td>
            16,311,454
         </td>
      </tr>
      <tr>
         <td>
            Coloplast B
         </td>
         <td>
            DKK
         </td>
         <td>
            809.5
         </td>
         <td>
            11
         </td>
         <td>
            1.38
         </td>
         <td>
            809
         </td>
         <td>
            809.5
         </td>
         <td>
            85,840
         </td>
         <td>
            69,363,301
         </td>
      </tr>
      <tr>
         <td>
            D/S Norden
         </td>
         <td>
            DKK
         </td>
         <td>
            155
         </td>
         <td>
            -1.5
         </td>
         <td>
            -0.96
         </td>
         <td>
            155
         </td>
         <td>
            155.1
         </td>
         <td>
            51,681
         </td>
         <td>
            8,037,225
         </td>
      </tr>
      <tr>
         <td>
            Danske Bank
         </td>
         <td>
            DKK
         </td>
         <td>
            69.05
         </td>
         <td>
            2.55
         </td>
         <td>
            3.83
         </td>
         <td>
            69.05
         </td>
         <td>
            69.2
         </td>
         <td>
            1,723,719
         </td>
         <td>
            115,348,068
         </td>
      </tr>
      <tr>
         <td>
            DSV
         </td>
         <td>
            DKK
         </td>
         <td>
            105.4
         </td>
         <td>
            0.2
         </td>
         <td>
            0.19
         </td>
         <td>
            105.2
         </td>
         <td>
            105.4
         </td>
         <td>
            674,873
         </td>
         <td>
            71,575,035
         </td>
      </tr>
      <tr>
         <td>
            FLSmidth &amp; Co.
         </td>
         <td>
            DKK
         </td>
         <td>
            295.8
         </td>
         <td>
            -1.8
         </td>
         <td>
            -0.6
         </td>
         <td>
            295.1
         </td>
         <td>
            295.8
         </td>
         <td>
            341,263
         </td>
         <td>
            100,301,032
         </td>
      </tr>
      <tr>
         <td>
            G4S plc
         </td>
         <td>
            DKK
         </td>
         <td>
            22.53
         </td>
         <td>
            0.05
         </td>
         <td>
            0.22
         </td>
         <td>
            22.53
         </td>
         <td>
            22.57
         </td>
         <td>
            190,920
         </td>
         <td>
            4,338,150
         </td>
      </tr>
      <tr>
         <td>
            Jyske Bank
         </td>
         <td>
            DKK
         </td>
         <td>
            144.2
         </td>
         <td>
            1.4
         </td>
         <td>
            0.98
         </td>
         <td>
            142.8
         </td>
         <td>
            144.2
         </td>
         <td>
            78,163
         </td>
         <td>
            11,104,874
         </td>
      </tr>
      <tr>
         <td>
            Københavns ...
         </td>
         <td>
            DKK
         </td>
         <td>
            1,580.00
         </td>
         <td>
            -12
         </td>
         <td>
            -0.75
         </td>
         <td>
            1,590.00
         </td>
         <td>
            1,620.00
         </td>
         <td>
            82
         </td>
         <td>
            131,110
         </td>
      </tr>
      <tr>
         <td>
            Lundbeck
         </td>
         <td>
            DKK
         </td>
         <td>
            103.4
         </td>
         <td>
            -2.5
         </td>
         <td>
            -2.36
         </td>
         <td>
            103.4
         </td>
         <td>
            103.8
         </td>
         <td>
            157,162
         </td>
         <td>
            16,462,282
         </td>
      </tr>
      <tr>
         <td>
            Nordea Bank
         </td>
         <td>
            DKK
         </td>
         <td>
            43.22
         </td>
         <td>
            -0.06
         </td>
         <td>
            -0.14
         </td>
         <td>
            43.22
         </td>
         <td>
            43.25
         </td>
         <td>
            167,520
         </td>
         <td>
            7,310,143
         </td>
      </tr>
      <tr>
         <td>
            Novo Nordisk B
         </td>
         <td>
            DKK
         </td>
         <td>
            552.5
         </td>
         <td>
            -3.5
         </td>
         <td>
            -0.63
         </td>
         <td>
            550.5
         </td>
         <td>
            552.5
         </td>
         <td>
            843,533
         </td>
         <td>
            463,962,375
         </td>
      </tr>
      <tr>
         <td>
            Novozymes B
         </td>
         <td>
            DKK
         </td>
         <td>
            805.5
         </td>
         <td>
            5.5
         </td>
         <td>
            0.69
         </td>
         <td>
            805
         </td>
         <td>
            805.5
         </td>
         <td>
            152,188
         </td>
         <td>
            121,746,199
         </td>
      </tr>
      <tr>
         <td>
            Pandora
         </td>
         <td>
            DKK
         </td>
         <td>
            39.04
         </td>
         <td>
            0.94
         </td>
         <td>
            2.47
         </td>
         <td>
            38.8
         </td>
         <td>
            39.04
         </td>
         <td>
            350,965
         </td>
         <td>
            13,611,838
         </td>
      </tr>
      <tr>
         <td>
            Rockwool In...
         </td>
         <td>
            DKK
         </td>
         <td>
            492
         </td>
         <td>
            0
         </td>
         <td>
            0
         </td>
         <td>
            482
         </td>
         <td>
            492
         </td>
         <td></td>
         <td></td>
      </tr>
      <tr>
         <td>
            Rockwool In...
         </td>
         <td>
            DKK
         </td>
         <td>
            468
         </td>
         <td>
            12
         </td>
         <td>
            2.63
         </td>
         <td>
            465.2
         </td>
         <td>
            468
         </td>
         <td>
            9,885
         </td>
         <td>
            4,623,850
         </td>
      </tr>
      <tr>
         <td>
            Sydbank
         </td>
         <td>
            DKK
         </td>
         <td>
            95
         </td>
         <td>
            0.05
         </td>
         <td>
            0.05
         </td>
         <td>
            94.7
         </td>
         <td>
            95
         </td>
         <td>
            103,438
         </td>
         <td>
            9,802,899
         </td>
      </tr>
      <tr>
         <td>
            TDC
         </td>
         <td>
            DKK
         </td>
         <td>
            43.6
         </td>
         <td>
            0.13
         </td>
         <td>
            0.3
         </td>
         <td>
            43.5
         </td>
         <td>
            43.6
         </td>
         <td>
            845,110
         </td>
         <td>
            36,785,339
         </td>
      </tr>
      <tr>
         <td>
            Topdanmark
         </td>
         <td>
            DKK
         </td>
         <td>
            854
         </td>
         <td>
            13.5
         </td>
         <td>
            1.61
         </td>
         <td>
            854
         </td>
         <td>
            855
         </td>
         <td>
            38,679
         </td>
         <td>
            32,737,678
         </td>
      </tr>
      <tr>
         <td>
            Tryg
         </td>
         <td>
            DKK
         </td>
         <td>
            290.4
         </td>
         <td>
            0.3
         </td>
         <td>
            0.1
         </td>
         <td>
            290
         </td>
         <td>
            290.4
         </td>
         <td>
            94,587
         </td>
         <td>
            27,537,247
         </td>
      </tr>
      <tr>
         <td>
            Vestas Wind...
         </td>
         <td>
            DKK
         </td>
         <td>
            90.15
         </td>
         <td>
            -4.2
         </td>
         <td>
            -4.45
         </td>
         <td>
            90.1
         </td>
         <td>
            90.15
         </td>
         <td>
            1,317,313
         </td>
         <td>
            121,064,314
         </td>
      </tr>
      <tr>
         <td>
            William Dem...
         </td>
         <td>
            DKK
         </td>
         <td>
            417.6
         </td>
         <td>
            0.1
         </td>
         <td>
            0.02
         </td>
         <td>
            417
         </td>
         <td>
            417.6
         </td>
         <td>
            64,242
         </td>
         <td>
            26,859,554
         </td>
      </tr>
   </tbody>
</table>
<div style="height: 4000px">
   lots of content down here...
</div>

Open in new window

$(function(){
    $("table").stickyTableHeaders();
});
/*! Copyright (c) 2011 by Jonas Mosbech - https://github.com/jmosbech/StickyTableHeaders
    MIT license info: https://github.com/jmosbech/StickyTableHeaders/blob/master/license.txt */

;(function ($, window, undefined) {
	'use strict';

	var name = 'stickyTableHeaders';
	var defaults = {
			fixedOffset: 0
		};

	function Plugin (el, options) {
		// To avoid scope issues, use 'base' instead of 'this'
		// to reference this class from internal events and functions.
		var base = this;

		// Access to jQuery and DOM versions of element
		base.$el = $(el);
		base.el = el;

		// Listen for destroyed, call teardown
		base.$el.bind('destroyed',
			$.proxy(base.teardown, base));

		// Cache DOM refs for performance reasons
		base.$window = $(window);
		base.$clonedHeader = null;
		base.$originalHeader = null;

		// Keep track of state
		base.isSticky = false;
		base.leftOffset = null;
		base.topOffset = null;

		base.init = function () {
			base.options = $.extend({}, defaults, options);

			base.$el.each(function () {
				var $this = $(this);

				// remove padding on <table> to fix issue #7
				$this.css('padding', 0);

				base.$originalHeader = $('thead:first', this);
				base.$clonedHeader = base.$originalHeader.clone();

				base.$clonedHeader.addClass('tableFloatingHeader');
				base.$clonedHeader.css('display', 'none');

				base.$originalHeader.addClass('tableFloatingHeaderOriginal');

				base.$originalHeader.after(base.$clonedHeader);

				base.$printStyle = $('<style type="text/css" media="print">' +
					'.tableFloatingHeader{display:none !important;}' +
					'.tableFloatingHeaderOriginal{position:static !important;}' +
					'</style>');
				$('head').append(base.$printStyle);
			});

			base.updateWidth();
			base.toggleHeaders();

			base.bind();
		};

		base.destroy = function (){
			base.$el.unbind('destroyed', base.teardown);
			base.teardown();
		};

		base.teardown = function(){
			if (base.isSticky) {
				base.$originalHeader.css('position', 'static');
			}
			$.removeData(base.el, 'plugin_' + name);
			base.unbind();

			base.$clonedHeader.remove();
			base.$originalHeader.removeClass('tableFloatingHeaderOriginal');
			base.$originalHeader.css('visibility', 'visible');
			base.$printStyle.remove();

			base.el = null;
			base.$el = null;
		};

		base.bind = function(){
			base.$window.on('scroll.' + name, base.toggleHeaders);
			base.$window.on('resize.' + name, base.toggleHeaders);
			base.$window.on('resize.' + name, base.updateWidth);
		};

		base.unbind = function(){
			// unbind window events by specifying handle so we don't remove too much
			base.$window.off('.' + name, base.toggleHeaders);
			base.$window.off('.' + name, base.updateWidth);
			base.$el.off('.' + name);
			base.$el.find('*').off('.' + name);
		};

		base.toggleHeaders = function () {
			base.$el.each(function () {
				var $this = $(this);

				var newTopOffset = isNaN(base.options.fixedOffset) ?
					base.options.fixedOffset.height() : base.options.fixedOffset;

				var offset = $this.offset();
				var scrollTop = base.$window.scrollTop() + newTopOffset;
				var scrollLeft = base.$window.scrollLeft();
   // added to add back top part of header               
                 $('.row-1').show();
                 $('.row-2').show();
                $('.search2').hide();
				if ((scrollTop > offset.top) && (scrollTop < offset.top + $this.height() - base.$clonedHeader.height())) {
                    
  // added to remove top part of header
                    $('.row-1').hide();
                    $('.row-2').hide();
                     $('.search2').show();
                    
					var newLeft = offset.left - scrollLeft;
					if (base.isSticky && (newLeft === base.leftOffset) && (newTopOffset === base.topOffset)) {
						return;
					}

					base.$originalHeader.css({
						'position': 'fixed',
						'top': newTopOffset,
						'margin-top': 0,
						'left': newLeft,
						'z-index': 1 // #18: opacity bug
					});
					base.$clonedHeader.css('display', '');
					base.isSticky = true;
					base.leftOffset = newLeft;
					base.topOffset = newTopOffset;

					// make sure the width is correct: the user might have resized the browser while in static mode
					base.updateWidth();
				}
				else if (base.isSticky) {
					base.$originalHeader.css('position', 'static');
					base.$clonedHeader.css('display', 'none');
					base.isSticky = false;
				}
			});
		};

		base.updateWidth = function () {
			if (!base.isSticky) {
				return;
			}
			// Copy cell widths from clone
			var $origHeaders = $('th,td', base.$originalHeader);
			$('th,td', base.$clonedHeader).each(function (index) {

				var width, $this = $(this);

				if ($this.css('box-sizing') === 'border-box') {
					width = $this.outerWidth(); // #39: border-box bug
				} else {
					width = $this.width();
				}

				$origHeaders.eq(index).css({
					'min-width': width,
					'max-width': width
				});
			});

			// Copy row width from whole table
			base.$originalHeader.css('width', base.$clonedHeader.width());
		};

		base.updateOptions = function(options) {
			base.options = $.extend({}, defaults, options);
			base.updateWidth();
			base.toggleHeaders();
		};

		// Run initializer
		base.init();
	}

	// A plugin wrapper around the constructor,
	// preventing against multiple instantiations
	$.fn[name] = function ( options ) {
		return this.each(function () {
			var instance = $.data(this, 'plugin_' + name);
			if (instance) {
				if (typeof options === "string") {
					instance[options].apply(instance);
				} else {
					instance.updateOptions(options);
				}
			} else if(options !== 'destroy') {
				$.data(this, 'plugin_' + name, new Plugin( this, options ));
			}
		});
	};

})(jQuery, window);

Open in new window

body
{
    margin: 0 auto;
    padding: 0 20px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 11px;
    color: #555;
}
table
{
    border: 0;
    padding: 0;
    margin: 0 0 20px 0;
    border-collapse: collapse;
}
th
{
    padding: 10px; /* NOTE: th padding must be set explicitly in order to support IE */
    text-align: center !important;        
    font-weight:bold;
    font-size: 18px;
    color: #FFF;
    background-color: #555;
}
tbody td
{
    padding: 10px;
    line-height: 18px;
    border-top: 1px solid #E0E0E0;
}
tbody tr:nth-child(2n)
{
    background-color: #F7F7F7;
}
tbody tr:hover
{
    background-color: #EEEEEE;
}
td
{
    text-align: right;
}
td:first-child, th:first-child
{
    text-align: left;
}
.row-3{height:50px;}

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0
 
LVL 1

Author Closing Comment

by:Adam
ID: 39778277
Perfect! Thanks very much Scott.
0

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