How to set a global property on the string constructor in NodeJS?

Question

I want to define a property on the string constructor, and I want then to access this property from any file in my project. for example:

file1.js

String.capitalize = function(){
this.//...etc
}

file2.js

"Hello nice to meet you".capitalize()

you need to specify extension on prototype. Something like: String.prototype.capitalize = function(){ ... }; — A.T., Jan 23 '21 at 15:18
https://stackoverflow.com/a/42702634 But please don't mutate built-in prototypes — CertainPerformance, Jan 23 '21 at 15:18

score 0 · Accepted Answer · answered Jan 23 '21 at 15:19

0

You can define a new String prototype function like in the example below

String.prototype.capitalize = function(){
 return this.toUpperCase();
};




console.log("Hello nice to meet you".capitalize());

answered Jan 23 '21 at 15:19

Aalexander

Why doesn't show code completion? and: do you think this is a bad practice? – Ekmek Jan 23 '21 at 15:22
I can really recommend reading the first answer here https://stackoverflow.com/questions/14034180/why-is-extending-native-objects-a-bad-practice – Aalexander Jan 23 '21 at 15:30

1 Answers1