Can you bind 'this' in an arrow function?
To be complete, you can re-bind arrow functions, you just can't change the meaning of this
.
bind
still has value for function arguments:
((a, b, c) => {
console.info(a, b, c) // 1, 2, 3
}).bind(undefined, 1, 2, 3)()
Try it here: http://jsbin.com/motihanopi/edit?js,console
From the MDN:
An arrow function expression has a shorter syntax compared to function expressions and lexically binds the this value (does not bind its own this, arguments, super, or new.target). Arrow functions are always anonymous.
This means you cannot bind a value to this
like you want.
You cannot rebind this
in an arrow function. It will always be defined as the context in which it was defined. If you require this
to be meaningful you should use a normal function.
From the ECMAScript 2015 Spec:
Any reference to arguments, super, this, or new.target within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an immediately enclosing function.