input validations

val.js

function inputValidations() {
	function isAlphaNumeric(val) {
	    var letter = /[a-zA-Z]/,
	        number = /[0-9]/;
	
	    var valid = number.test(val) && letter.test(val);
	
	    return valid;
	}
	
	function isMinLength(val, min) {
	    if(val.length >= min) {
	        return true;
	    }
	
	    return false;
	}
	
	function isMaxLength(val, max) {
	    if(val.length <= max) {
	        return true;
	    }
	
	    return false;
	}
	
	function isNumber(val) {
	    if(!val.match(/^[+-]?\d+(\.\d+)?([eE][+-]?\d+)?$/)) {
	        return true;
	    }
	
	    return false;
	}
	
	function isPhoneNumber(val) {
	    if(val.match(/^\+?([0-9]{2})\)?[-. ]?([0-9]{4})[-. ]?([0-9]{4})$/)) {
	        return true;
	    }
	
	    return false;
	}
	
	function containsNumbers(val) {
	    if(val.match(/\d+/g)) {
	        return true;
	    }
	
	    return false;
	}
	
	function isInt(val) {
	    if(!val.match(/^[+-]?\d+(\\d+)?([eE][+-]?\d+)?$/)) {
	        return true;
	    }
	
	    return false;
	}
	
	function isValidEmail(val) {
	    if(/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(val)) {
	        return true;
	    }
	
	    return false;
	}
	
	function isEmpty(val) {
	    if(!$.trim(val).length) {
	        return true;
	    }
	
	    return false;
	}
	
	return {
	    isEmpty: isEmpty,
	    isInt: isInt,
	    isValidEmail: isValidEmail,
	    isNumber: isNumber,
	    isPhoneNumber: isPhoneNumber,
	    isAlphaNumeric: isAlphaNumeric,
	    containsNumbers: containsNumbers,
	    isMinLength: isMinLength,
	    isMaxLength: isMaxLength
	};
}