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/**
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* Although DataTables' internal numeric sorting works no problem on negative
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* numbers, it does not accept positively signed numbers. This plug-in will
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* sort just such data numerically.
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*
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* @name Fully signed numbers sorting
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* @summary Sort data numerically with a leading `+` symbol (as well as `-`).
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* @author [Allan Jardine](http://sprymedia.co.uk)
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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: 'signed-num', 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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"signed-num-pre": function ( a ) {
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return (a=="-" || a==="") ? 0 : a.replace('+','')*1;
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},
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"signed-num-asc": function ( a, b ) {
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return ((a < b) ? -1 : ((a > b) ? 1 : 0));
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},
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"signed-num-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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