I am little confused about while object missing the reference(context).
In TypeScript (shown here with some dummy parameters for explanatory reasons):
Fat Arrow
var x = new SomeClass();
someCallback(function(a){x.doSomething(a)});// some time this x object may
missing the reference (context) of x object
someCallback(a => x.doSomething(a));// if we using arrow function, then how
it manage stabling the object context? which is doing same below bind()code.
bind() : Functions created from function.bind() always preserve 'this'
var x = new SomeClass();
window.setTimeout(x.someMethod.bind(x), 100);//bind will be also manage
the x context(reference).
Question:
- What are the performance and differences between them?
- when to use
bind()
andarrow(a=>a...)
function?