如何编写 javaScript 函数通过提示输入 2 个数字并在警报中显示这些数字的总和？

Question

我想显示这个：输入您的号码：第一：第二：回答：我试过这样做：

var a = prompt("A : ", "");
var b = prompt("B : ", "");
function calc(a,b)
{
   return a + b;
}
alert ("The addition is =" + calc(a,b);

Answer 1

您只需要从提示中解析 return

var a = prompt("A : ", "");
var b = prompt("B : ", "");
function calc(a,b)
{
   return parseFloat(a) + parseFloat(b);
}
alert ("The addition is =" + calc(a,b));

Answer 2

只需一个提示即可完成：

var numbers = prompt("Enter two numbers separated by a semi-colon: ", "");
var a = numbers.split(";")[0];
var b = numbers.split(";")[1];

function calc(a,b)
{
   return parseFloat(a) + parseFloat(b);
}
alert ("The addition of " + numbers + " is = " + calc(a,b));

如何编写 javaScript 函数通过提示输入 2 个数字并在警报中显示这些数字的总和？

How to write a javaScript function to enter 2 numbers through prompts and display the sum of those numbers in an alert?

javascript

prompt

input