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Plugins/api/fnGetColumnIndex.js

32 lines
1010 B
JavaScript

/**
* Maintenance of web-sites can often cause unexpected headaches, particularly
* if the hardcoded index of an array (the columns in a DataTables instance)
* needs to change due to an added or removed column. This plug-in function
* will match a given string to the title of a column in the table and return
* the column index, helping to overcome this problem.
*
* @name fnGetColumnIndex
* @summary Get the column index by searching the column titles
* @author [Michael Ross](http://www.rosstechassociates.com/)
*
* @param {string} sCol Column title to search for
* @returns {integer} Column index, or -1 if not found
*
* @example
* var table = $('#example').dataTable();
* table.fnGetColumnIndex( 'Browser' );
*/
jQuery.fn.dataTableExt.oApi.fnGetColumnIndex = function ( oSettings, sCol )
{
var cols = oSettings.aoColumns;
for ( var x=0, xLen=cols.length ; x<xLen ; x++ )
{
if ( cols[x].sTitle.toLowerCase() == sCol.toLowerCase() )
{
return x;
}
}
return -1;
};