Javascript multidimensioned isset ()

Question

At startup:

if (data.custaccount.webaddress) {
   alert('found it');
}

I get an error

data.custaccount is undefined

The only way I can get around this seems to be with multiple IFs, for example:

if (undefined != data && undefined != data.custaccount && undefined != data.custaccount.webaddress) {
   alert('found it');
}

Is there any way to make this easier?

In php, we usually used isset (data.custaccount.webaddress), and this worked pretty well. is there an equivalent in javascript (or jquery)?

We used try / catch, but found to slow down the performance of the script significantly.

I saw someone else ask for something like this at http://verens.com/2005/07/25/isset-for-javascript/ without any success, but I hope stackoverflow will make this work normally save the day :)

Thank!!!

Justin

Answer 1

, , data, data.custaccount.webaddress.

, ,

if(data && data.custaccount && data.custaccount.webaddress){
}

!

, try/catch . in,

if('custaccount' in data && 'webaddress' in data.custaccount){
}