Auto escape Regex in JavaScript?

Question

How to create an escaped regular expression out of any possible regex string? There are already many answers to this question, for example:

function escapeRegex(string) {
    return string.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
}
var text = 'test123',
    reString = '\d+',
    escaped = escapeRegex(reString),
    re = new RegExp(escaped);
console.log(re);                //returns /d\+/
console.log(text.match(re));    //returns null

But this function does not return all the numbers from the text, which was expected in this example.

Answer 1

If I've understood your question correctly, you don't need the escape function at all. Instead, you could use Tagged Template . Something like this:

 function escapeRegex(string) { return string.raw[0]; } var text = 'test123', escaped = escapeRegex `\d+`, re = new RegExp(escaped); console.log(re); console.log(text.match(re));

In the case the string doesn't need any further modifications, you can also use String.raw method instead of a tagged function, like so:

escaped = String.raw`\d+`;