How to avoid 'cannot read property of undefined' errors?

Question

In my code, I deal with an array that has some entries with many objects nested inside one another, where as some do not. It looks something like the following:

Answer 1

You can avoid getting an error by giving a default value before getting the property

var test = [{'a':{'b':{'c':"foo"}}}, {'a': "bar"}];

for (i=0; i

This works great with arrays too:

const entries = [{id: 1, name: 'Scarllet'}]
// Giving a default name when is empty
const name = (entries.find(v => v.id === 100) || []).name || 'no-name'
console.log(name)