从jQuery .each()中的javascript对象中删除它

Question

我无法this从以下javascript对象中删除(特定的"事件"),当this来自jquery .each()循环时.

weatherData:

{
    "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()循环的缩小版本:

$.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:

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

...因为$.each将传递属性名称(例如"Move Out Day")作为迭代器函数的第一个参数,您接受它i.因此,要从对象中删除该属性,请使用该名称.

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