Javascript中的素数函数...多个语句

So I'm tasked with making program that can tell whether a number is prime or not. I want to solve this problem using a multiple if-statement. The one that I came up with is awkward. So i just want some feedback on how to make it better.:

所以我的任务是制作可以判断数字是否为素数的程序。我想使用多个if语句来解决这个问题。我提出的那个很尴尬。所以我只想要一些关于如何让它变得更好的反馈:

function primenumber(num) {
    if (num / num === 1 && num % 2 !== = 0 || num % 3 !== = 0 | num % 5 !== = 0 | num % 7 !== = 0) {
        return true;
    } else {
        return false
    }
}

I figured these numbers are the lowest common denominators. So a number is prime if these numbers don't divide evenly into it. Any feedback is greatly appreciated. Keep in mind that I am new to Javascript.

我认为这些数字是最低的共同点。因此,如果这些数字不均匀分配,则数字为素数。任何反馈都非常感谢。请记住,我是Javascript的新手。

1 个解决方案

#1

I figured it out:

我想到了:

If((num === 1) || (num === 2) || (num === 3) || (num === 5) || (num     === 7))
{ return true;
}

If((num%2===0) || (num%3===0) || (num%5===0) || (num%7===0)){
return false;}
}
return true; 
}

It may not be the most sophisticated coding but it's mine and it works perfectly.. at least according to coderbyte

它可能不是最复杂的编码,但它是我的,它完美地工作..至少根据coderbyte

1 个解决方案

#1

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