- 1: [1,2,3,4] - 2: [1,2][3,4] - 3: SyntaxError - 4: 1,23,4

##### Answer: 4 The + operator is not meant or defined for arrays. So it converts arrays into strings and concatenates them.

#19🎯 Exercise💻 Code

JavaScript Coding Exercise 19

javascript

1console.log([1, 2] + [3, 4]);

[1,2,3,4]

[1,2][3,4]

SyntaxError

1,23,4

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