RegExp character class with RegExp constructor JavaScript

Question

I am building a simple RegExp helper for my own personal use. Essentially, it's going to work with method chaining and return the string with all of the selected elements.

The question I have is how to use a character class with the RegExp constructor. Here is my code:

var pattern = new RegExp(this.expression.join(''), "g");

As you can see, I am passing my expression in the first argument and a flag in the second.

My question is, how can I use the RegExp constructor and wrap it in a character class, like /[...]/?

Niet the Dark Absol · Accepted Answer · 2013-01-02 22:22:45Z

1

The RegExp constructor takes a string, so you can do string things with it:

var pattern = new RegExp("["+this.expression.join('')+"]","g");

answered Jan 2, 2013 at 22:22

Niet the Dark Absol

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1 Comment

Sethen Over a year ago

Ahh, word. Is there no parameter for this in the constructor?

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