Recursion javascript

Question

I can not understand why it turns out 8? How does the program work? What are you doing? Into a stupor enters the 3rd line return 1; Why won't just the number 1 return?)

function power(base, exponent) { if (exponent == 0) return 1; else return base * power(base, exponent - 1); } console.log(power(2, 3));

Only me only me 112 four · Accepted Answer · 2017-01-21T23:59:09

Any number in the zero degree, with the exception of zero, is one . Therefore, if exponent == 0 (this is a degree in your cases), then the function returns 1, but otherwise it raises the base number to the exponent degree.

PS But programmers don't need math :)

PPS About recursion well told here https://learn.javascript.ru/recursion

Recursion javascript

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