Hi,

Here is two (very) simple modifications for "numberfield" prototype.
For beginners ...

A new param "forceDecimals", to force formatting of the string value with as many decimals than "decimalPrecision".

Eg :
decimalPrecision : 2
forceDecimals : true
value : 125.2

=> display/submit value : 125.20

I'm not a javascript expert ...
Comments, criticals or suggestions are welcome ...


bonus track ... As french user, I use "," (comma) as decimalSeparator. A simple way to use "." (dot) as secondary allowed decimalSeparator is to allow it in baseChars ...
So you can use any of them (useful to allow copy/paste from others software using dot as decimal separator)...


Code:
if (Ext.form.field.Number){
        Ext.apply(Ext.form.field.Number.prototype, {
			
			// force decimals string value
			forceDecimals : true,
			valueToRaw: function(value) {
				var me = this,decimalSeparator = me.decimalSeparator,precision = me.decimalPrecision,forceDecimals = me.forceDecimals;
				value = me.parseValue(value);
				value = me.fixPrecision(value);
				value = Ext.isNumber(value) ? value : parseFloat(String(value).replace(decimalSeparator, '.'));
				
				if (isNaN(value)) return '';
				else {
					value = String(value).replace('.', decimalSeparator);
					if (value.indexOf(decimalSeparator)>=0 && forceDecimals) {
						var dec = value.substr(value.indexOf(decimalSeparator)+1);
						for(var i=dec.length;i<precision;i++) {
							value = value+"0";
						}
					}
					return value;
				}
			},

			// allow dot as decimalSeparator even if this is not the locale setting
			baseChars : '0123456789.',
        });
    }