Question

I’d like to compare 2 strings with each other, but I got a little problem with the Brackets.
The String I want to seek looks like this:

CAPPL:LOCAL.L_hk[1].vorlauftemp_soll

Quoting those to bracket is seemingly useless.

I tried it with this code

var regex = new RegExp("CAPPL:LOCAL.L_hk\[1\].vorlauftemp_soll","gi");
var value = "CAPPL:LOCAL.L_hk[1].vorlauftemp_soll";
regex.test(value);

Somebody who can help me??

Answer 1

It is useless because you’re using string. You need to escape the backslashes as well:

var regex = new RegExp("CAPPL:LOCAL.L_hk\\[1\\].vorlauftemp_soll","gi");

Or use a regex literal:

var regex = /CAPPL:LOCAL.L_hk\[1\].vorlauftemp_soll/gi

Unknown escape characters are ignored in JavaScript, so "\[" results in the same string as "[".