Question

我想使用-v "C:/Program Files/MySQL/Data/":/var/lib/mysql/中的enum e.g：

setInterval()

如果我得到例外：

declare global {
    enum En_Sch_Mode {
        Daily = 1,
        Manually = 4,
        Sensor = 5
    }
}

export class DeviceInfoEx {
 private m_time_handel: any;
 private m: DeviceInfo;
    constructor() {
        this.timer_check = this.timer_check.bind(this);
        this.m_time_handel = setInterval(this.timer_check, 1000);
    }

    public timer_check(): void {
        if (this.m.schedulemode === En_Sch_Mode.Daily) {
            console.log("hello world");
        }
    }
}

Answer 1

declare表示在javascript中有一个enum En_Sch_Mode定义。像这样：

var En_Sch_Mode;
(function (En_Sch_Mode) {
    En_Sch_Mode[En_Sch_Mode["Daily"] = 1] = "Daily";
    En_Sch_Mode[En_Sch_Mode["Manually"] = 4] = "Manually";
    En_Sch_Mode[En_Sch_Mode["Sensor"] = 5] = "Sensor";
})(En_Sch_Mode || (En_Sch_Mode = {}));

所以也许你想要：

enum En_Sch_Mode {
    Daily = 1,
    Manually = 4,
    Sensor = 5
}

// Your "if" compiles in JavaScript to:
if (this.m.schedulemode === En_Sch_Mode.Daily) {

或

const enum En_Sch_Mode {
    Daily = 1,
    Manually = 4,
    Sensor = 5
}

// Your "if" compiles in JavaScript to:
if (this.m.schedulemode === 1 /* Daily */) {

Answer 2

按如下方式定义枚举：

export enum En_Sch_Mode {
    Daily = 1,
    Manually = 4,
    Sensor = 5
}

Augmentations for the global scope can only be directly nested in external modules or ambient module declarations.

如果您要查找命名空间，请按以下步骤操作：

namespace myNameSpace{
    export enum En_Sch_Mode {
        Daily = 1,
        Manually = 4,
        Sensor = 5
    }
}

let enSchMode = myNameSpace.En_Sch_Mode.Daily;
console.log(enSchMode);

您可以在此测试您的打字稿有效期： https://www.typescriptlang.org/play/index.html

使用枚举形式setInterval（）导致异常？

2 个答案: