加法运算符无法在JavaScript中使用 [英] Addition operator not working in JavaScript

问题描述

加法运算符不适用于Javascript.如果我做5 + 5，它将得到55，而不是10.我该如何解决?

Addition operator isn't working for me in Javascript. If I do 5+5, it gives me 55 instead of 10. How can I fix this?

var numberOne = prompt (Enter first number.);
if (numberOne > 0.00001) {
 var numberTwo = prompt(Enter the second number.);
if (numberTwo > 0.00001) {
var alertAnswer = alert (numberOne + numberTwo);
}
}

推荐答案

您正在阅读字符串，并将其串联.您需要使用parseInt将它们转换为整数.

You're reading in strings, and concatenating them. You need to convert them to integers with parseInt.

IE:

var numberOne = parseInt(prompt("Enter first number."), 10);

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