Javascript Safely reading a nested property
Javascript Safely reading a nested property
In some templating frameworks it can be really annoying reading a nested property of a JS object as it can of mean chaining a heap of null checks together....
for instance if I need to access a nested property to in email.addresses.to safely it means having to do something like:
if(email && (adresses = email.addresses)) {
//print addresses.to
}
This is verbose and annoying. I needed a function that would return the nested value, or simply return an empty string if any property in the chain was null or undefined
i.e.
safeRead(email, addresses, to);
I also wanted property chains can be as long or short as Id like.... ie.:
safeRead(my, very, deeply, nested, property);
The finished product:
