即使值与我设置的值不匹配，仍在执行 IF 语句

Question

我找不到我的代码中可能遗漏或错误的地方，无论如何我已经创建了一个 if else 语句，我可以在以下情况下转到第一个条件：

Variable One has a "N" value AND Variable Two or Variable Three has a "ValueOne"
或
Variable One has a "N" AND Variable Four has a value of either "ValueTwo" or "ValueThree"

我的代码中的问题是，即使变量一中没有值，只要变量四具有正确的值，它就会进入第一个条件

您将在代码中看到的值不是我将使用的实际值，它只是一个示例。

我尝试使用此代码来解决我的问题：

function testNum() {
    var accessEquipment = "n";
    var sync = "sample1";
    var fiberServiceAlarm = "sample1";
    var wanLight = "flashingRed";
    var result1 = "success";
    var result2 = "fail";

    if (
        (accessEquipment == "n" && (sync == "sample" || fiberServiceAlarm == "sample")) ||
        (accessEquipment == "n" && (wanLight == "flashingGreen" || wanLight == "off" || wanLight == "flashingRed"))) {
        return result1;
    } else {
        return result2;
    }
}

这解决了问题，但我认为以这种方式编写代码不是很好。有什么办法不使 accessEquipment 加倍吗？

这是我想要工作的实际代码：这里面有什么我需要补充的吗？在这一个中，它仍然转到 IF STATEMENT 事件 accessEquipment 与我设置的值不匹配，只要 wanLight 具有 flashingRed 或其他值它仍然转到 IF STATEMENT。我想要的是，只有当 accessEquipment 有 N 并且 wanLight 有这三个值中的任何一个时，它才会通过那里。

function testNum() {
    var accessEquipment = "na";
    var sync = "sample1";
    var fiberServiceAlarm = "sample1";
    var wanLight = "flashingRed";
    var result1 = "success";
    var result2 = "fail";

    if (accessEquipment == "n"
        && (sync == "sample" || fiberServiceAlarm == "sample")
        || (wanLight == "flashingGreen" || wanLight == "off" || wanLight == "flashingRed")
    ) {
        return result1;
    } else {
        return result2;
    }
}

Answer 1

需要加一对括号

if (accessEquipment == "n"
        && ((sync == "sample" || fiberServiceAlarm == "sample")
        || (wanLight == "flashingGreen" || wanLight == "off" || wanLight == "flashingRed")))

Answer 2

您可以通过在数组中获取各种值并使用 include 检查来获得更紧凑的版本。这适用于常量值和变量。

function testNum() {
    var accessEquipment = "n";
    var sync = "sample1";
    var fiberServiceAlarm = "sample1";
    var wanLight = "flashingRed";
    var result1 = "success";
    var result2 = "fail";

    return accessEquipment == "n" && (
            [sync, fiberServiceAlarm].includes("sample") ||
            ["flashingGreen", "off", "flashingRed"].includes(wanLight)
        )
        ? result1
        : result2;
}

即使值与我设置的值不匹配，仍在执行 IF 语句

Still going through the IF STATEMENT even the value does not match in the value that I set

javascript

logical-operators