69 lines
2.0 KiB
JavaScript
69 lines
2.0 KiB
JavaScript
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/**
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* jQuery.fn.sortElements
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* --------------
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* @author James Padolsey (http://james.padolsey.com)
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* @version 0.11
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* @updated 18-MAR-2010
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* --------------
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* @param Function comparator:
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* Exactly the same behaviour as [1,2,3].sort(comparator)
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*
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* @param Function getSortable
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* A function that should return the element that is
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* to be sorted. The comparator will run on the
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* current collection, but you may want the actual
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* resulting sort to occur on a parent or another
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* associated element.
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*
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* E.g. $('td').sortElements(comparator, function(){
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* return this.parentNode;
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* })
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*
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* The <td>'s parent (<tr>) will be sorted instead
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* of the <td> itself.
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*/
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jQuery.fn.sortElements = (function(){
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var sort = [].sort;
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return function(comparator, getSortable) {
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getSortable = getSortable || function(){return this;};
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var placements = this.map(function(){
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var sortElement = getSortable.call(this),
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parentNode = sortElement.parentNode,
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// Since the element itself will change position, we have
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// to have some way of storing it's original position in
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// the DOM. The easiest way is to have a 'flag' node:
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nextSibling = parentNode.insertBefore(
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document.createTextNode(''),
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sortElement.nextSibling
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);
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return function() {
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if (parentNode === this) {
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throw new Error(
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"You can't sort elements if any one is a descendant of another."
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);
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}
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// Insert before flag:
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parentNode.insertBefore(this, nextSibling);
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// Remove flag:
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parentNode.removeChild(nextSibling);
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};
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});
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return sort.call(this, comparator).each(function(i){
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placements[i].call(getSortable.call(this));
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});
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};
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})();
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