Monday, November 26, 2018

Regular Expressions: Match Numbers and Letters of the Alphabet

Regular Expressions: Match Numbers and Letters of the Alphabet
Using the hyphen (-) to match a range of characters is not limited to letters. It also works to match a range of numbers.

For example, /[0-5]/ matches any number between 0 and 5, including the 0 and 5.

Also, it is possible to combine a range of letters and numbers in a single character set.

let jennyStr = "Jenny8675309";
let myRegex = /[a-z0-9]/ig;
// matches all letters and numbers in jennyStr
jennyStr.match(myRegex);

Create a single regex that matches a range of letters between h and s, and a range of numbers between 2 and 6. Remember to include the appropriate flags in the regex.

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