在Javascript中添加百分号

Question

In Javascript I'm trying to add a % sign at the end of my function but I get NaN when I test it.

function percentReadyForDegree(creditsEarned) { 
    return Math.round((creditsEarned / 71) * 100 + "%");
}  

percentReadyForDegree(30);

Answer 1

You need to pass a number to Math.round . In your code you're passing a string. Add the sign after the operation:

return Math.round(creditsEarned / 71 * 100) +'%';