I am trying to create something similar to this:

var regexp_loc = /e/i;

except I want the regexp to be dependent on a string, so I tried to use new RegExp but I couldn't get what i wanted.

Basically I want the e in the above regexp to be a string variable but I fail with the syntax.

I tried something like this:

var keyword = something;



var test_regexp = new RegExp(/ + keyword + /i);

Basically I want to search for a sub string in a larger string then replace the string with some other string, case insensitive.

regards,
alexander