How can I get a value in a nested object quickly? The object is uncertain

Question

I get a data from backend, the data is JSON format and nested，like

[{
  a: {
    b: {
      c: 'value',
      ...
    },
    ...
  }
},....]

or maybe

[{
  a: {
    b: {
      // no  key 'c'
      ...
    },
    ...
  }
},....]

may also be

[{
  a: {
    // no key 'b'
    ...
  }
},....]

I have to get 'a.b.c' safely, is there any good way to do it?

'a.b.c.d'?

You can use `hasOwnProperty` in order to check if property exists. — Mihai Alexandru-Ionut, Apr 14 '17 at 08:05

score 0 · Answer 1 · answered Apr 14 '17 at 08:07

0

You can use hasOwnProperty() like this

if(a.hasOwnProperty('b')){
   console.log(a.b);
}

answered Apr 14 '17 at 08:07

Duannx

1 Answers1