Variable Scope

We have the following code:

var name = 'John',
    obj = {
        name: 'Mary',
        whoIam: function() {
            var name = 'James';

            console.log( this.name );

            setTimeout( function () {
                console.log( this.name );
            }, 100 );
        }
    };

obj.whoIam();

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What does it prints?

"Mary"
undefined
"John"

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Why?

It logs Mary because the context of execution is obj.
It logs John because setTimeout is executed in the global context.

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