A5 Field validation functions

A5Validation.js

//''------------------------- Validation Functions
function isValidDate(s) { 
  var bits = s.split('/');
  var d = new Date(bits[2], bits[1] - 1, bits[0]);
  return d && (d.getMonth() + 1) == bits[1] && d.getDate() == Number(bits[0]);  
}

function validate(data, type, maxLen, req){
	//debugger;
	req = (typeof(req) == 'undefined') ? true : req;

	//check for correct datatype
	switch(type) {
		case 'date':
			if(!isValidDate(data)){
				return getMessage('VAL_INVALIDDATE');
			}			
	}

	//check for empty value
	if(req == true && (data == '' || data == null)){
		return getMessage('VAL_EMPTY');		
	}

	//check for max length
	if(typeof(maxLen) == 'number'){
		if(data.length > maxLen)
			return getMessage('VAL_TOOLONG').replace('{length}', maxLen);
	}

	return true;
}