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JavaScript

Posted by flyn rider
flyn rider
Courses Plus Student 1,056 Points

Is message += and message =+ the same?

following...

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

Those operations are quite different! The "+=" is the addition assignment operator. It adds the value from the variable on the left to the value on the right, and then puts the result back into the variable on the left. If used with strings, instead of adding values numerically, it joins them by concatenation.

On the other hand, "=+" is two operators, and is the same as "= +". So it's the normal assignment operator, with a "+" prepended to the expression on the right. The "+" part will have no effect on numbers, but it will convert a string into a number.