Using a string variable as a regular expression

Question

In JavaScript, we add /gto the string without quotes to indicate a regular expression.

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

Is it possible? If so, can someone show me some sample code?

Thank.

Answer 1

Use this:

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

And note that /git is not a delimiter for a regular expression, it is a global modifier. The regular expression looks like this: /your regex here/modifiers. modifiersmay be a combination of g, iand m. Everything is explained here: http://www.regular-expressions.info/javascript.html

Answer 2

/g - , ( ), , .

, new RegExp. : https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/RegExp

Answer 3

, , . ( ) , :

new RegExp(yourRegExp, "modifiers").

, -.