validate.js

// Validate Phone Format 
var filter = /^\(?(\d{3})\)?[- ]?(\d{3})[- ]?(\d{4})$/; 

// Validate Email Format 
var filter = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,6}|[0-9]{1,3})(\]?)$/; 

// Validate Date Format (Short Date mm/dd/yyyy) 
var filter = /^(0?[1-9]|1[012])\/(0?[1-9]|[12][0-9]|3[01])\/(?:19|20|21\d{2})/; 

// Validate URL Format 
var filter = /^(ftp|http|https):\/\/[A-Za-z0-9\.-]{1,}\.[A-Za-z]{2}/ 

// To Verify if a text has the right format 
var result = filter.test(textToValidate); 

// NOTE: result will be true if format is correct otherwise false.