javascript - 从数组中删除部分

Question

我有以下数组:

KHWArray = [{"date":"23 Jan 14","hours":12,"mins":"31","score":22},
           {"date":"23 Jan 14","hours":12,"mins":"36","score":22},
           {"date":"23 Jan 14","hours":12,"mins":"44","score":22}
           ]

如何从所有数组中删除小时和分钟部分，以便只留下日期和分数。

我研究过拼接和删除，但似乎无法实现

Answer 1

您的数组元素是对象，而不是数组，并且没有内置函数来切片对象。不过写起来很容易:

function removeKeys(obj, keys) {
    keys.forEach(function(key) { delete obj[key] });
    return obj
}

然后

KHWArray = KHWArray.map(function(elem) {
    return removeKeys(elem, ['hours', 'mins'])    
})

http://jsfiddle.net/HZDaX/