Hi all
,
What are the groups thoughts on safely accessing a nested objects
value that may be undefined? I recently came across a blog post [1]
from Oliver Steele where he did a shortcut that looks like this:
var person = {address: {zip: 1234}},
person2 = {};
console.log("Person2 undefined: " +
((person2||{}).address||{}).zip || "no zip");
This takes the place of code like this:
if(person2 && person2.address)
console.log("Person2 zip: " + person2.address.zip);
Does the code lose readability when done with that sort of shorthand?
Also, is there the possibility of a performance hit for creating
multiple empty objects?
[1] http://osteele.com/archives/2007/12/cheap-monads
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