Question

具有一个主菜单，当用户选择一个选项时，将从中执行其他JS脚本。不完全确定如何从主JS菜单执行JS。我只想退出菜单并正确运行JS。我仍然需要导出JS并以某种方式执行它吗？

runOptions();
var runOptions = function () {
    inquirer.prompt({
        name: "action",
        type: "list",
        message: "What do you want to do?",
        choices: [
            "Perform Magic",
            "Go To Bed",
            "Have a Vodka Martini"

        ]
    }).then(function (answer) {
        switch (answer.action) {
            case "Perform Magic":
                runMagicman();
                break;

            case "Go To Bed":
                runSleepyTime();
                break;

            case "Have a Vodka Martini":
                runGetDrunk();
                break;
        }
    });
}

var runMagicman = function () {
// Exit this menu and run magicman.js
}

var runSleepyTime = function () {
// Exit this menu and run sleepytime.js    
}

var runGetDrunk = function () {
// Exit this menu and run getdrunknow.js
}

Answer 1

如果包含runOptions的文件是主要入口点，则无需导出runOptions函数（意味着您正在做节点./thisFile.js）。我们要导出功能或类的主要原因是按功能或用途对它们进行分组。

此外，执行这样的动态动作的一个巧妙小技巧是使用.apply（），它将为每个动作使用灵活的参数调用该函数。

runOptions();
var runOptions = function () {
    inquirer.prompt({
        name: "action",
        type: "list",
        message: "What do you want to do?",
        choices: [
            "Perform Magic",
            "Go To Bed",
            "Have a Vodka Martini"

        ]
    }).then(function (answer) {
        const functionMapping = {"Perform Magic": runMagicman, "Go To Bed": runSleepyTime, "Have a Vodka Martini": runGetDrunk };
        const parameterMapping = {"Perform Magic": [answer.arg1], "Go To Bed": runSleepyTime: [answer.arg1, answer.arg2, answer.arg3], "Have a Vodka Martini": [answer.arg1, answer.arg2] };
        if (functionMapping[answer.action]){
          return functionMapping[answer.action].apply(null, parameterMapping[answer.action]);
        }
        throw "Action not found";
    });
}

var runMagicman = function (arg1) {
// Exit this menu and run magicman.js
}

var runSleepyTime = function (arg1, arg2, arg3) {
// Exit this menu and run sleepytime.js    
}

var runGetDrunk = function (arg1, arg2) {
// Exit this menu and run getdrunknow.js
}

希望能为您解决一切。

从主JS菜单运行其他JS

1 个答案: