[Regular Expressions] Find Repeated Patterns

var str = `aaaaaaa`;
var regex = /a{3,}/g  // 3 to infinite
var regex = /a{3,5}/g  // 5 max, 3 min
var regex = /a{0,}/g  // {0}match the empty string, the same as a*
var regex = /a*/g
var regex = /a+/g  //at least one a
var regex = /a{0,1}/g // 0 one 1 instance should match, the same as a? 
var regex = /a?/g


var str = `
http://egghead.io
not a website
https://www.egghead.io
`;

var regex = /https{0,1}/g  // match http or https
// the same as 
var regex = /https?/g

var regex = /:\/\/.{1,}/g  //match ://anything after that
// the same as
var regex = /:\/\/.+/g

var regex = /https?:\/\/.+/g