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51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/**
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* Sorts a column containing chapter numbers. This can be most useful when
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* using DataTables for a book or book reference style application. By
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* default, five sections are supported (a.b.c.d.e) with each being upto
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* four-digits long. Those defaults are controlled by constMaxSections and
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* constMaxSectionDigits respectively, and can be easily changed
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*
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* @name chapter
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* @summary Sort book chapters numerically
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* @author Colin Marks
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*
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* @example
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* $('#example').dataTable( {
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* columnDefs: [
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* { type: 'chapter', targets: 0 }
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* ]
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* } );
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*/
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jQuery.extend(jQuery.fn.dataTableExt.oSort, {
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'chapter-pre': function(a) {
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function makeFiller(count) {
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return count === 0 ? '' : Array(count + 1).join('0');
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}
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var constMaxSections = 5;
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var constMaxSectionDigits = 4;
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var filler;
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var result = '';
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var sections = a.split('.');
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for (var i = 0; i < constMaxSections; i++) {
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filler = i < sections.length ? constMaxSectionDigits - sections[i].length : constMaxSectionDigits;
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result += filler === 0 ? '' : Array(filler + 1).join('0');
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result += i < sections.length ? sections[i] : '';
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}
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return result;
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},
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'chapter-asc': function(a, b) {
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return a < b ? -1 : a > b ? 1 : 0;
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},
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'chapter-desc': function(a, b) {
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return a < b ? 1 : a > b ? -1 : 0;
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}
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});
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