var g= prompt ("Is M1 greater than M2?"); if g= ("Yes") { alert("M1 wins!"); } else { alert ("M2

Question

This code isn't working. Can anyone tell me why? I can rework it to get the same result another way but I would like to know why this particular method isn't working. Thanks.

Answer 1

Two things are wrong. Firstly, if statements have to be in parenthesis. Secondly, you have a single equal sign. That is the assignment operator, to give something a value. You have to compare the values using a double equal sign.

The if statement becomes:
if (g == "Yes") {
alert("M1 wins!);
}

Edit:
Typically in JavaScript it is better to use a triple equal sign to avoid conversions. So it would be:
if (g === " Yes")

Answer 2

Thanks, it worked.