JavaScript Quiz What is the result of the following code? console.log(1 + “2” + 3 + 4); a) “1234” b) “10” c) “6” d) “124” What is the result of the following code? console.log(typeof null); a) “object” b) “null” c) “undefined” d) “boolean” Which of the following is NOT a valid way to declare a ...