Why Doesn't the JavaScript Power Function Work?

  • Context: Java 
  • Thread starter Thread starter mindauggas
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SUMMARY

The JavaScript function 'power' is designed to return 1 when the exponent is 0, but it fails to execute correctly due to improper function invocation. The function requires two parameters, yet it was called without any arguments. Additionally, the return value must be utilized or stored for it to be effective. The comparison operator '==' is sufficient for numerical comparisons, simplifying the code.

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mindauggas
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write an if statement that checks if the parameter exponent is 0. If it is, return 1 (a base case).

Code:
var power = function(exponent, base){
	if (exponent === 0){
		return 1;
	}
};

power();

It does not work, ca anyone tell why?
 
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mindauggas said:
write an if statement that checks if the parameter exponent is 0. If it is, return 1 (a base case).

Code:
var power = function(exponent, base){
	if (exponent === 0){
		return 1;
	}
};

power();

It does not work, ca anyone tell why?

You are not calling your function correctly.
1. The power function has two parameters. You are calling it with no parameters.
2. The power function returns a value, so you need to store or otherwise use the return value.
Code:
var retValue = power(0, 10);
After the code above runs, retValue should be set to 1.

Also, you don't need to use === in your comparison, since you're just comparing numbers, not objects. The == operator should work just fine.
 

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