JavaScript Programming Intermediate Quiz 5

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Intermediate Quiz 5
1. What is the output of console.log(typeof Symbol()) ?
2. Which operator is used for exponentiation in ES6?
3. What is the output of typeof undefined ?
4. What is the output of console.log(typeof null) ?
5. Which method is used to remove the last element of an array?
6. Which method is used to add elements to the end of an array?
7. What is the output of console.log([1,2,3].length) ?
8. What is the output of console.log(typeof true) ?
9. What does Object.keys({a:1, b:2}) return?
10. Which method executes a function for each key/value pair in an object?
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