筛选数组保存相同项到新数组

最新推荐文章于 2023-11-11 15:48:20 发布

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最新推荐文章于 2023-11-11 15:48:20 发布

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文章标签： javascript

本文链接：https://blog.youkuaiyun.com/XuChangLu/article/details/120109782

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 		let list = [
            { name: '小明', age: 20, school: '清华' },
            { name: '小红', age: 21, school: '清华' },
            { name: '小白', age: 18, school: '北大' },
            { name: '小黄', age: 19, school: '北大' },
            { name: '小浪', age: 21, school: '哈佛' },
        ]

  var obj = []
        list.forEach((item, index) => {
            let { school } = item
            if (!obj?.[school]) {
                obj[school] = {
                    children: [],
                    school: item.school,
                  
                }
            }
            obj[school].children.push(item)
        })
        let data = Object.values(obj); // 最终输出

[
	{
		"children": [
			"school": "清华",
			{
				"name": "小明",
				"age": 20,
				"school": "清华"
			},
			{
				"name": "小红",
				"age": 21,
				"school": "清华"
			}
		]
	},
	{
		"children": [
			"school": "北大",
			{
				"name": "小白",
				"age": 18,
				"school": "北大"
			},
			{
				"name": "小黄",
				"age": 19,
				"school": "北大"
			}
		]
	},
	{
		"children": [
		"school": "哈佛",
			{
				"name": "小浪",
				"age": 21,
				"school": "哈佛"
			}
		]
			}
]