chapter
Sort book chapters numerically
- Author: Colin Marks
Sorts a column containing chapter numbers. This can be most useful when using DataTables for a book or book reference style application. By default, five sections are supported (a.b.c.d.e) with each being upto four-digits long. Those defaults are controlled by constMaxSections and constMaxSectionDigits respectively, and can be easily changed
Plug-in code
jQuery.extend(jQuery.fn.dataTableExt.oSort, {
'chapter-pre': function(a) {
function makeFiller(count) {
return count === 0 ? '' : Array(count + 1).join('0');
}
var constMaxSections = 5;
var constMaxSectionDigits = 4;
var filler;
var result = '';
var sections = a.split('.');
for (var i = 0; i < constMaxSections; i++) {
filler = i < sections.length ? constMaxSectionDigits - sections[i].length : constMaxSectionDigits;
result += filler === 0 ? '' : Array(filler + 1).join('0');
result += i < sections.length ? sections[i] : '';
}
return result;
},
'chapter-asc': function(a, b) {
return a < b ? -1 : a > b ? 1 : 0;
},
'chapter-desc': function(a, b) {
return a < b ? 1 : a > b ? -1 : 0;
}
});
CDN
This plug-in is available on the DataTables CDN:
Note that if you are using multiple plug-ins, it is beneficial in terms of performance to combine the plug-ins into a single file and host it on your own server, rather than making multiple requests to the DataTables CDN.
Version control
If you have any ideas for how this plug-in can be improved, or spot anything that is in error, it is available on GitHub and pull requests are very welcome!
- This plug-in: chapter.js
- Full DataTables plug-ins repository: DataTables/Plugins
Example
$('#example').dataTable( {
columnDefs: [
{ type: 'chapter', targets: 0 }
]
} );