// Mascara para las fechas var reOneOrMoreDigits = /[\d+]/; var reNoDigits = /[^\d]/gi; function doMask(textBox,e) { var keyCode = e.which ? e.which : e.keyCode; // enter, backspace, delete and tab keys are allowed thru if(keyCode == 13 || keyCode == 8 || keyCode == 9 || keyCode == 46) return true; // get character from keyCode....dealing with the "Numeric KeyPad" // keyCodes so that it can be used var keyCharacter = cleanKeyCode(keyCode); // grab the textBox value and the mask var val = textBox.value; var mask = textBox.mask; // simple Regex to check if key is a digit if(reOneOrMoreDigits.test(keyCharacter) == false) return false; // get value minus any masking by removing all non-numerics val = val.replace(reNoDigits,''); // add current keystroke val += keyCharacter; // mask it...val holds the existing TextBox.value + the current keystroke textBox.value = val.maskValue(mask); setCaretAtEnd(textBox); return false; } // puts starting chars in field function onFocusMask(textBox,e) { var val = textBox.value; //var mask = textBox.mask; var mask = "##/##/####"; if(val.length == 0 || val == null) { var i = mask.indexOf('#'); textBox.value = mask.substring(0,i); } setCaretAtEnd(textBox); // set just in case. textBox.maxlength = mask.length; } // blank field if no digits entered function onBlurMask(textBox,e) { var val = textBox.value; // if no digits....nada entered.....blank it. if(reOneOrMoreDigits.test(val) == false) { textBox.value = ''; } } String.prototype.maskValue = function(mask) { //var retVal = mask; var retVal = "##/##/####" var val = this; //loop thru mask and replace #'s with current value one at a time // better way of doing this ??? for(var i=0;i