Replace characters: "Bob" to "John"

[Kor]

is it possible to avoid using regExp constructor so we can have a single line like this:
inStr = inStr.replace(oldWordArr[i]+"/(?![^(]*\))/ig", newWordArr[i]);
I am not sure if "ig" is allowed to be placed in there.

By short: No.

[Declan1991]

You can't avoid the constructer, but you can write it in one line.

inStr = inStr.replace(new RegExp(oldWordArr[i]+"/(?![^(]*\))","ig"), newWordArr[i]);

Or maybe slightly clearer.

inStr = inStr.replace((new RegExp(oldWordArr[i]+"/(?![^(]*\))","ig")), newWordArr[i]);