首頁猿問如何將下列數(shù)組中key組成新的數(shù)組

如何將下列數(shù)組中key組成新的數(shù)組

Java JavaScript

怪盜飯團 2016-06-22 14:14:53

var?a=[{name:1,key:'a'},{name:2,key:'b'},{name:3,key:'a'},{name:3,key:'b'}]

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2 回答

慕萊塢9220042

TA貢獻377條經(jīng)驗獲得超508個贊

你好：

var?a=[{name:1,key:'a'},{name:2,key:'b'},{name:3,key:'a'},{name:3,key:'b'}];
		var?result?=?new?Array();
		for(var?index?in?a){
		?result[a[index].key]?=?new?Array();
		?result[a[index].key].push(a[index]);
		}
		console.log(result);

望采納！

2 反對回復(fù) 2016-06-22

weibo_青梅竹馬醬_0

TA貢獻27條經(jīng)驗獲得超64個贊

var?b?=?{};
a.forEach(function?(obj)?{
????var?array?=?b[obj['key']]?||?[];
????array.push(obj);
????b[obj['key']]?=?array;
});
console.log(b.a.length);console.log(b.b.length);

1 反對回復(fù) 2016-06-23