[Regular Expressions] Find Repeated Patterns
Regular Expression Quantifiers allow us to identify a repeating sequence of characters of minimum and maximum lengths. In this lesson we'll use Regular Expression Quantifiers to match repeated patterns, common Quantifier patterns, and using shorthand for those common Quantifier 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