How to write it better way e.g. lodash

Question

I want to check every child on way in array can i write it better with e.g. lodash

test[1] && test[1][2] && test[1][2][3] && doSomething

Answer 1

There are 3 common ways to get/check paths with lodash:

1. _.get - which would attempt to get the value based on path and provide default if that value is not found

2. _.has - which would give you boolean result if the path is found or not _.hasIn - which is like has but also would check if path is a direct or inherited property of object

3. _.result - which would walk the path and execute any function among the way to get to the value or work as _.get otherwise (no functions present)

var data = [
        [],
        [
          [],
          [
           'hello',
	   function(){ return 'foo'}
          ]
        ]
    ];
		
console.log('get:', _.get(data, '1.1.0'))
console.log('has:', _.has(data, '1.1.0'))

console.log('result:', _.result(data, '1.1.0'))
console.log('result:', _.result(data, '1.1.1'))

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>

The common thing here is all of them accept a path as a parameter which can do what you want. Just provide the deepest path and let those methods check/work for you.