js regexp变量括号

Question

So I have a function that receives an argument (named c ), then I create a regular expression like so: regC = new RegExp(c,'gi') . Now this works fine for most characters, but my function can also receive a ( or other paretheses. This cases create an error. I tried this: regC = '/['+c+']/gi' , but it didn't work

Answer 1

Pass the character set '['+c+']' to RegExp functions as

regC = new RegExp('['+c+']','gi');

Because

regC = '/['+c+']/gi'

Makes a string