Question

我有以下数据对象，最终entities中会有更多类似的对象：

function loadCardLibrary() {
    var cardLibrary = {
        entities: [
            {
                name: "Spareparts",
                values: {
                    sickness: 0,
                    attack: 0,
                    scrap: 3,
                    manaCost: 0
                },
                apply: [
                    applyCreature("Mech"),
                    applyHealth(1),
                    applyNoAttack(true)
                ]
            }
        ]
    };
    return cardLibrary;
}

我正在尝试编写一个函数（请参阅此example）来搜索name值，然后进入该对象并搜索以检查特定的apply值，如这样：

function checkHasNoAttack(entityName) {
    for (var entity in cardLibrary.entities) {
        if (cardLibrary.entities[entity].name === entityName) {
            // for debugging
            console.log(cardLibrary.entities[entity]);
            console.log(); // blank line
            for (var applied in cardLibrary.entities[entity].apply) {
                if (cardLibrary.entities[entity].apply[applied].applyNoAttack === true) {
                    console.log(entityName + " cannot attack.");
                } else {
                    console.log("test");
                    break;
                }
            }
        }
    }
}

当我马上打电话的时候，就像这样：

var canItAttack = checkHasNoAttack("Spareparts");

......这就是结果：

{ 
    name: 'Spareparts',
    values: {
        sickness: 0,
        attack: 0,
        scrap: 3,
        manaCost: 0
    },
    apply: [ 'Mech', 1, true ]
}

test

而不是来自test的{{1}}，我试图记录获取它以响应第一个else语句，并记录：

备件无法攻击。

了解到更复杂的逻辑将最终取代if那里我真的需要这个工作，但一直在修补它，我似乎无法做到正确。任何帮助非常感谢！

Answer 1

这很简单：

function check(a) {
    var result = null;
    cardLibrary.entities.forEach(function(b){
        if (b.name === a) {
            if (b.apply[2] === true) {
                console.log(a + " cannot attack!");
            } else {
                console.log("test");
            }
            result = b;
        }
    });
    return result;
}

apply是一个数组，您必须使用[2]来选择该值

Arrays在这方面做得很糟糕，我建议将apply修改为像这样的对象：

apply: {
    creature: applyCreature("Mech"),
    health: applyHealth(1),
    noAttack: applyNoAttack(true)
}

然后你可以使用这段代码：

function check(a) {
    var result = null;
    cardLibrary.entities.forEach(function(b){
        if (b.name === a) {
            if (b.apply.noAttack === true) {
                console.log(a + " cannot attack!");
            } else {
                console.log("test");
            }
            result = b;
        }
    });
    return result;
}

搜索多个级别的JSON值

1 个答案: