Shortcut for accessing member of an object [, of an object...]

Question

Is there a short way for accessing a nested object without checking each parent object?

this will throw an exception if foo or bar is undefined:

var exists = (foo.bar.value !== undefined);

I would expect a check function like:

var exists = Object.exists(foo.bar.value);

Is there already something build-in javascript?

After reading the linked question i can say: unfortunately, the answer is no -.- — Mr. Smith, Nov 17 '16 at 16:17

score 0 · Answer 1 · edited Nov 17 '16 at 14:03

0

Use typeOf

if (typeof myObject!= "undefined") {
   console.log('It exists')
}

edited Nov 17 '16 at 14:03

Alexis

answered Nov 17 '16 at 14:02

Jackthomson

1

That doesn't answer OP's question : `typeof foo.bar.value` when `foo` or `bar` are undefined will still raise a ReferenceError rather than return a value that can be interpreted as an absence of value. – Aaron Nov 17 '16 at 14:16

1 Answers1