A Good Sentence From Coursera Course

 "Since the arr.length counts the number of items in the array from one, and the array items are indexed from zero, this effectively means that as soon as i is equal to arr.length, the loop will finish and any other code after it will be run."

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  1. "Undefined, null and empty values" " var Jane Smith console.log(Jane Smith); " Above example is given at that topic for the result "undefined" but it doesn't work as wanted. Instead it outputs "undefined" with that input: " var JaneSmith console.log(JaneSmith); " The only difference between them is the space used between 'Jane' & 'Smith'. Why is that? 2. "var" Problem What is the problem with the last part, when we name the function a "var", it should work. Code works until then, but after naming it with a variable it says "undefined".
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