How to convert RegExp to string in Javascript

Convert to string

toLocaleString() and toString() return the literal representation of the regular expression.

Example

var pattern = new RegExp("\\[oo\\]at", "gi"); 
console.log(pattern.toString()); // /\[oo\]at/gi 
console.log(pattern.toLocaleString()); // /\[oo\]at/gi 

The valueOf() method for a regular expression returns the regular expression itself.

The code above generates the following result.