What are the values of x and y after the invocation of `foo` in following? var x = "I am global x"; var y = "I am global y"; function foo() { var y = x = "Hello from foo"; } foo();

What will this code produce: +new Date()

What is the value of x? var a = 'abc'; var x = a instanceof String;

Math.log(x) returns:

Which will create a copy of an array such that changes to the old array will not be reflected in the new array?

What does Math.random() do?

What will be the value of a? let a = void function f() { let a = 1 - 2; let b = 2 - 3 + 1; if (a) { return true; } else if (b) { return false; } else { return null; } return -1; }();

Which statement about Promises is not correct?

What's the point of code around the variable statement: (function() { var a = true; })();

How often will message 'hey' be logged in console? setInterval(() => {console.log('hey')},1);

Select options which create object type variables: