javascript - 如何使用 JavaScript 访问字典中的本地对象？

Question

我有嵌套对象

var model = {
    weather: {
        allData: ""
    },

    woeid: {
        id: 2389646,
        searchText: "davis",
        woeidScript: "some string'"+searchText+"' another string",
        forcastScript: "",
        found: true
    }

};

woeidScript 中的

searchText 返回未定义。如何引用这个本地对象？

Answer 1

你可以使用 getter :

The get syntax binds an object property to a function that will be called when that property is looked up.

一个优点是，您可以将其他值分配给属性 valueA 或 valueB 并获得除法的实际结果。

-- 以及对对象的直接引用。

var model = {
    weather: {
        allData: ""
    },
    woeid: {
        id: 2389646,
        searchText: "davis",
        get woeidScript() { return "some string'" + model.woeid.searchText + "' another string"; },
        forcastScript: "",
        found: true
    }
};
document.write(model.woeid.woeidScript);