In this post we will see some example of regular expression to understand flags.
i (Ignore case)
Makes the regular expression search case insensitive.
const regex = /foo/i; const str = 'FoO'; regex.test( str ); // Output true
This will make sure that the expression will be searched in complete string and does not stop on the first match.
const regex = /foo/g; const str = 'foo foo bar foo'; str.match( regex ); // Output ['foo', 'foo', 'foo']
To make the regular expression work for each row we use ‘m’ flag else the complete string is considered as one rejecting rows as new line.
const regex = /foo/m; const str = ` foo foo foo `; numberRegex.test( str ); // Output true
Hope this helps you to understand on how to use flags in regular expression. See you in my next post. Till then enjoy coding 🙂