Using a string variable as regular expression

Question

In JavaScript, we append /g to an unquoted string to denote a regular expression.

What if I have a string in a variable and want to use it as a regular

Answer 1

Use this:

new RegExp("your regex here", "modifiers");

And notice that /g is not the delimiter for a regex, it is global modifier. A regex looks like this: /your regex here/modifiers. modifiers can be a combination of g, i and m. They are all explained here: http://www.regular-expressions.info/javascript.html