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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Iterating through an Array

Adam Maley
Adam Maley
5,946 Points

; question about this

var temperatures = [100,90,99,80,70,65,30,10];

for (var i = 0; i < temperatures.length; i += 1) { console.log(temperatures[i]);

}

Why is this correct but this

var temperatures = [100,90,99,80,70,65,30,10];

for (var i = 0; i < temperatures.length; i += 1;) { console.log(temperatures[i]);

}

Is not correct...The ; after i +=1;

1 Answer

Steven Parker
Steven Parker
220,925 Points

Inside the "for" expression, the semicolons are separators between clauses, not delimiters. Adding an extra semicolon implies that there is a 4th clause, which is not proper syntax.