javascript - 在这种情况下，我可以引用 key 吗？

Question

所以我有这样的数据结构

    this.PauseFunctions = {
        2: {
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the 2-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the 2-second mark was called");
            }
        },
        5: {
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the 5-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the 5-second mark was called");
            }
        }
    };

我想知道我是否可以引用其值为包含 OnSlideTo 函数的对象的键。例如，在

        2: {
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the 2-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the 2-second mark was called");
            }
        }

我想知道有没有办法把它改成

        2: {
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the " + key + "-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the " key + "-second mark was called");
            }
        }

其中 key 是 2 这样我的程序可以更通用和可维护。

Answer 1

当然可以，但是您必须在定义值之后执行此操作，然后为键值设置种子。它不应该太复杂，只是一个简单的 for 循环，一旦键被填充。

var temp = new function(){

    this.PauseFunctions = {
        2: {
            //Key:,
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the "+this.Key+"-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the "+this.Key+"-second mark was called");
            }
        },
        5: {
            //Key:,
            OnSlideTo: function () {
                console.log("The OnSlideTo function of the event at the "+this.Key+"-second mark was called");
            },
            OnSlideAway: function () {
                console.log("The OnSlideAway function of the event at the "+this.Key+"-second mark was called");
            }
        }
    };

    //seed key value
    for(var key in this.PauseFunctions){
        this.PauseFunctions[key].Key = key;
    }
};
temp.PauseFunctions[2].OnSlideTo();