Object has-property-deep check in JavaScript

Question

Let\'s say we have this JavaScript object:

var object = {
   innerObject:{
       deepObject:{
           value:\'Here am I\'
       }
   }
};

<

Answer 1

I use try-catch:

var object = {
   innerObject:{
       deepObject:{
           value:'Here am I'
       }
   }
};
var object2 = {
  a: 10
}

let exist = false, exist2 = false;

try {
  exist  = !!object.innerObject.deepObject.value
  exist2 = !!object2.innerObject.deepObject.value
}
catch(e) {
}

console.log(exist);
console.log(exist2);