Javascript函数问题

Question

我试图让用户输入一个数字，然后输入另一个数字，该数字将从输入的第一个数字开始乘法表，并继续递增一个，直到达到提示用户输入的最后一个数字...

例如，如果用户输入 10，然后输入 1，然后输入 10，输出将如下所示:

10 * 1 = 10
10 * 2 = 20
10 * 3 = 30
...
10 * 10 = 100

我做错了什么？

感谢您的帮助!

function multiplierz(numberMultiplied, amountToMultiplyFirst, amountToMultiplyLast)
    {


        while (isNaN(numberMultiplied) = true || isNaN(amountToMultiplyFirst) = true || isNaN(amountToMultiplyLast) = true)
        {
            alert("YOU DID NOT ENTER ONLY NUMBERS. WAY TO GO DUMMY.");
            var numberMultiplied = prompt("Please Enter The Number to Multiply");
            var amountToMultiplyFirst = prompt("Start multiplying by which number?");
            var amountToMultiplyLast = prompt("End multiplying by which number?");
        }
        for (counter = amountToMultiplyFirst; counter <= amountToMultiplyLast; counter++)
            {
                document.write(numberMultiplied + " * " + counter + " = " + numberMultiplied * counter + "<br />");
            }
    }

    //Begin Program Below


        multiplierz(prompt("Please Enter The Number to Multiply"),prompt("Start multiplying by which number?"),prompt("End multiplying by which number?"));
</script>

Answer 1

您的 isNan(numberMultiplied) = true 抛出错误。在 javascript 中，= 运算符用于赋值。

就这样

while (isNaN(numberMultiplied) || isNaN(amountToMultiplyFirst) || isNaN(amountToMultiplyLast) )