bind vs. call vs. wrapper

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Testing in
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call
class Foo {
  foo() {
    return 'foo';
  }
  bar() {
    return this.foo();
  }
}
const foo = new Foo();
const fun = foo.bar;
console.assert(fun.call(foo) === 'foo', 'did not work');
ready
wrapper
class Foo {
  foo() {
    return 'foo';
  }
  bar() {
    return this.foo();
  }
}
const foo = new Foo();
const fun = () => foo.bar();
console.assert(fun() === 'foo', 'did not work');
ready
bind
class Foo {
  foo() {
    return 'foo';
  }
  bar() {
    return this.foo();
  }
}
const foo = new Foo();
const fun = foo.bar.bind(foo);
console.assert(fun() === 'foo', 'did not work');
ready

Revisions

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