Javascript access json data inside loop

Question

I have json data, now I'm trying to access it inside loop. But I got undefined.

Is there any way how to access it from loop?

var list = {
 macAddress: 'C0:49:EF:D3:79:20',
 category: 'esd',
 dr1: 1,
 dr2: 1,
 dr3: 0,
 dr4: 0
}
console.log(list);
for(var i=1; i<=2; i++) {
 var pinName = "dr" + i;
 
 console.log(list.pinName);
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

Answer 1

List has no property pinName. You need the value of pinName to be evaluated as the key by calling list[pinName].