Value of 'this'

this.js

console.log(this);

function printThis(){
    console.log("Inside printThis");
    console.log(this);
}

function printThisInClosure(){
    console.log("Insude PrintThisInClosure");
    console.log(this);
    function inner(){
        console.log("Inside inner");
        console.log(this);
    }
    inner();
}
printThis();
printThisInClosure();


var obj = {};
obj.printObj = printThis;
obj.printInnerFunction = printThisInClosure;
obj.printObj();
obj.printInnerFunction();