/**
* This type-detection plug-in will look at an HTML string from a data cell,
* strip the HTML tags and then check to see if the remaining data is numeric.
* If it is, then the data can be sorted numerically with the Numbers with HTML
* sorting plug-in.
*
* DataTables 1.10+ has numeric HTML data type and sorting abilities built-in.
* As such this plug-in is marked as deprecated, but might be useful when
* working with old versions of DataTables.
*
* @name Numbers with HTML
* @summary Detect data which is a mix of HTML and numeric data.
* @deprecated
* @author [Allan Jardine](http://sprymedia.co.uk)
*/
jQuery.fn.dataTableExt.aTypes.unshift( function ( sData )
{
sData = typeof sData.replace == 'function' ?
sData.replace( /<[\s\S]*?>/g, "" ) : sData;
sData = $.trim(sData);
var sValidFirstChars = "0123456789-";
var sValidChars = "0123456789.";
var Char;
var bDecimal = false;
/* Check for a valid first char (no period and allow negatives) */
Char = sData.charAt(0);
if (sValidFirstChars.indexOf(Char) == -1)
{
return null;
}
/* Check all the other characters are valid */
for ( var i=1 ; i<sData.length ; i++ )
{
Char = sData.charAt(i);
if (sValidChars.indexOf(Char) == -1)
{
return null;
}
/* Only allowed one decimal place... */
if ( Char == "." )
{
if ( bDecimal )
{
return null;
}
bDecimal = true;
}
}
return 'num-html';
} );
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