js数组对象中获取不重复项-简洁版-CFANZ编程社区

js数组对象中获取不重复项-简洁版

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>


<script>

    let arr = [{
        name: "张三",
        id: "1"
    },
    {
        name: "李四",
        id: "2"
    },
    {
        name: "李四",
        id: "2"
    },
    {
        name: "小兰",
        id: "3"
    },
    {
        name: "哈哈",
        id: "3"
    },
    {
        name: "张三",
        id: "1"
    },
    {
        name: "张三",
        id: "1"
    }
    ]

    function fun(arr) {
        let newArr = [...arr];
        let indexArr = [];
        arr.forEach((s, i) => {
            let count = 0;
            newArr.forEach((m, j) => {
                if (arr[i].name == newArr[j].name) {
                    count++;
                }
            })
            if (count === 1) {
                indexArr.push(s);
            }
        })
        return indexArr
    }
    let list = fun(arr);
    console.log(list, "结果")

</script>

</html>

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