Pastable version of Format Numbers With Commas

<pre class='prettyprint' language='javascript'># Javascript    
&lt;script type=&quot;text/javascript&quot;&gt;
    function AddCommas(nStr)
    {	
        nStr += '';
        nStr = nStr.replace(/,/g, '');
        
        x = nStr.split('.');	
        x1 = x[0];	
        x2 = x.length &gt; 1 ? '.' + x[1] : '';	
        
        var rgx = /(\d+)(\d{3})/;	
        while (rgx.test(x1)) 
        {		
            x1 = x1.replace(rgx, '$1' + ',' + '$2');	
        }	
        
        return x1 + x2;
    }
    
    function FormatNumber(obj)
    {
        $('#'+obj).val(AddCommas($('#'+obj).val()));
    }
&lt;/script&gt;

# HTML
&lt;input name=&quot;txtNumber&quot; type=&quot;text&quot; id=&quot;txtNumber&quot; onkeyup=&quot;javascript:FormatNumber('txtNumber');&quot; /&gt;</pre>
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Pastable version of Format Numbers With Commas