什么是从嵌套的javascript对象中删除属性的最佳方法？ [英] Whats the best way to remove a property from nested javascript Object?

问题描述

我有一个树对象如下，我试图删除items数组属性，如果它是空的。我不确定最好的方法吗？

I have a tree object as below, I am trying to remove the items array property if it's empty. I am not sure on the best approach to do this?

我正在考虑循环键，检查属性然后使用删除删除myJSONObject [prop] ...欢迎任何想法/想法？

I am thinking of looping through the key, check the property and then remove using delete myJSONObject[prop]... Any thoughts / ideas are welcome?

[{
    text: "TreeRoot",
    items: [{
        text: "Subgroup1",
        items: []
    }, {
        text: "Subgroup2",
        items: []
    }, {
        text: "Subgroup3",
        items: [],
        items: [{
            text: "subgroup5",
            items: [{
                text: "subgroup6",
                items: [{
                    text: "subgroup7",
                    items: [{
                        text: "subgroup8",
                        items: []
                    }]
                }]
            }]
        }]
    }]
}]

推荐答案

这个sh应该做的工作（ ES5 ）：

This should do the job (ES5):

function removeEmpty(obj) {
  Object.keys(obj).forEach(function(key) {
    (key === 'items' && obj[key].length === 0) && delete obj[key] ||
    (obj[key] && typeof obj[key] === 'object') && removeEmpty(obj[key])
  });
  return obj;
};

JSBIN

相同的 ES6 ：

const removeEmpty = (obj) => {
  Object.keys(obj).forEach(key =>
    (key === 'items' && obj[key].length === 0) && delete obj[key] ||
    (obj[key] && typeof obj[key] === 'object') && removeEmpty(obj[key])
  );
  return obj;
};

JSBIN

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