My JS regex ref

regex.js

// HashTags
var simpleHash = /#\w+/g;
var complexHash = /\B#\w*[a-zA-Z]+\w*/g; // this seems uneccessary

// eg : 
var input = "this is a #string with #tags to be #extracted";
var matches  = input.match(sinpleHash);
var matches  = input.match(complexHash);

// email
function validateEmail(email) {
    var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
    return re.test(email);
}