What's the difference between the g and m modifiers in Javascript regexes?

Question

In javascript regular expressions, you can put in a 'g' modifier for global, and 'm' for multiple. What's the difference between them, or are they the same thing?

Answer 1

m does not stand for "multiple", but for "multiline". And it makes ^ and $ match at line beginnings and line endings, respectively (instead of just the beginning and ending of the string).

Well, and g really means "global", so that the regex engine continues to find further matches after the first one.

Further reading about regex modifiers.