javascript - 从 jQuery .each() 中的 javascript 对象中删除它

Question

我在删除 this 时遇到问题(特定的“事件”)来自以下 javascript 对象，当 this 时来自 jquery .each()循环。

天气数据:

{
    "events":{
        "Birthday":{
            "type":"Annual",
            "date":"20120523",
            "weatherType":"clouds",
            "high":"40",
            "low":"30",
            "speed":"15",
            "direction":"0",
            "humidity":"0"
        },
        "Move Out Day":{
            "type":"One Time",
            "date":"20120601",
            "weatherType":"storm",
            "high":"80",
            "low":"76",
            "speed":"15",
            "direction":"56",
            "humidity":"100"
        }
    },
    "dates":{
        "default":{
            "type":"clouds",
            "high":"40",
            "low":"30",
            "speed":"15",
            "direction":"0",
            "humidity":"0"
        },
        "20120521":{
            "type":"clear",
            "high":"60",
            "low":"55",
            "speed":"10",
            "direction":"56",
            "humidity":"25"
        }
    }
}

这是 .each() 的缩小版循环:

$.each(weatherData.events, function(i){
    if(this.type == "One Time"){
        delete weatherData.events[this];
    }
})

Answer 1

您正在使用一个需要字符串(属性名称)的对象。我相信你想要:

$.each(weatherData.events, function(i){
    if(this.type == "One Time"){
        delete weatherData.events[i];
        // change is here --------^
    }
});

...因为 $.each 会将属性名称(例如，"Move Out Day")作为第一个参数传递给迭代器函数，您're accepting as i.因此，要从对象中删除该属性，您可以使用该名称。

Gratuitous live example | source