I'm trying to define a "dot function" where there are no parameters but has a . and a string or number before it like these:
.toUpperCase()
.toLowerCase()
.indexOf()
.charAt()
.substring()
You do 2..toString, not toString(2).
How do you define one of them?
Defining a dot function is easy. Here's how you can define it on a single object.
var a = {}, or a = function() {}, or a = [], etc.
a.dotFunction = function() { return 'hi'; }
console.log(a.dotFunction());
If you want to define it on all instances of a class, use prototype.
function someClass() {
}
someClass.prototype.dotFunction = function() { return 'hi'; };
console.log(new someClass().dotFunction());
You can even do this on built-in types (some, like Prototype.js, do this, though most recommended against it).
Number.prototype.dotFunction = function() { return 'hi'; };
console.log((0).dotFunction());
