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陣列操作-如何根據條件從陣列中洗掉特定條目

2022-01-07 23:10:14 .NET開發

我試圖過濾一個陣列,但我沒有得到預期的解決方案。有人可以幫忙嗎。在這個陣列中,如果 from.organization_details.type 是 'SELLER_USER' 并且 to.type 值是 'OPERATOR',我需要過濾掉。此外,如果 from.organization_details.type == 'OPERATOR_USER' 和 to[0].type 值為 'SHOP'

[
    {
        "body": "Could you please elaborate on the discount",
        "from": {
            "display_name": "vandhana jayaprakash",
            "organization_details": {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            },
            "type": "CUSTOMER_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            }
        ]
    },
    {
        "body": "for testing purpose",
        "from": {
            "display_name": "vandhana jayaprakash",
            "organization_details": {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            },
            "type": "CUSTOMER_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            },
            {
                "display_name": "Operator",
                "type": "OPERATOR"
            }
        ]
    },
    {
        "body": "i need to know about warranty ",
        "from": {
            "display_name": "vandhana jayaprakash",
            "organization_details": {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            },
            "type": "CUSTOMER_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            }
        ]
    },
    {
        "body": "this is a test messgae from seller on dec 17 21",
        "from": {
            "display_name": "[email protected]",
            "organization_details": {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            },
            "type": "SHOP_USER"
        },
        "to": [
            {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            }
        ]
    },
    {
        "body": "hi there",
        "from": {
            "display_name": "Operator",
            "organization_details": {
                "display_name": "Operator",
                "type": "OPERATOR"
            },
            "type": "OPERATOR_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            },
            {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            }
        ]
    },
    {
        "body": "hello this is a test messsage on jan 5 2022",
        "from": {
            "display_name": "vandhana jayaprakash",
            "organization_details": {
                "display_name": "vandhana jayaprakash",
                "id": "2211",
                "type": "CUSTOMER"
            },
            "type": "CUSTOMER_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            },
            {
                "display_name": "Operator",
                "type": "OPERATOR"
            }
        ]
    },
    {
        "body": "this is a message sent to operator ",
        "from": {
            "display_name": "[email protected]",
            "organization_details": {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            },
            "type": "SHOP_USER"
        },
        "to": [
            {
                "display_name": "Operator",
                "type": "OPERATOR"
            }
        ]
    },
    {
        "body": "this is a msg from operator to seller ",
        "from": {
            "display_name": "Operator",
            "organization_details": {
                "display_name": "Operator",
                "type": "OPERATOR"
            },
            "type": "OPERATOR_USER"
        },
        "to": [
            {
                "display_name": "Taufiq Live Store",
                "id": "2001",
                "type": "SHOP"
            }
        ]
    }
]
我嘗試了下面的代碼(請參閱小提琴鏈接)但它沒有按預期作業。如果它包含 to.type == 'CUSTOMER',它將消除陣列條目。我只想消除陣列中的最后兩個條目。提前致謝

https://jsfiddle.net/4m9kgfpv/

uj5u.com熱心網友回復:

使用Array#filter, 迭代陣列并在以下情況下保留元素:

from.organization_details.typeCUSTOMER

或者

to有一個元素,其中typeCUSTOMER(使用Array#some

const conferenceDays = [
  {
    "body": "Could you please elaborate on the discount",
    "from": {
      "display_name": "vandhana jayaprakash",
      "organization_details": { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER" },
      "type": "CUSTOMER_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" }
    ]
  },
  {
    "body": "for testing purpose",
    "from": {
      "display_name": "vandhana jayaprakash",
      "organization_details": { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER"},
      "type": "CUSTOMER_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" },
      { "display_name": "Operator", "type": "OPERATOR" }
    ]
  },
  {
    "body": "i need to know about warranty ",
    "from": {
      "display_name": "vandhana jayaprakash",
      "organization_details": { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER" },
      "type": "CUSTOMER_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" }
    ]
  },
  {
    "body": "this is a test messgae from seller on dec 17 21",
    "from": {
      "display_name": "[email protected]",
      "organization_details": { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" },
      "type": "SHOP_USER"
    },
    "to": [
      { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER" }
    ]
  },
  {
    "body": "hi there",
    "from": {
      "display_name": "Operator",
      "organization_details": { "display_name": "Operator", "type": "OPERATOR" },
      "type": "OPERATOR_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" },
      { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER" }
    ]
  },
  {
    "body": "hello this is a test messsage on jan 5 2022",
    "from": {
      "display_name": "vandhana jayaprakash",
      "organization_details": { "display_name": "vandhana jayaprakash", "id": "2211", "type": "CUSTOMER" },
      "type": "CUSTOMER_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" },
      { "display_name": "Operator", "type": "OPERATOR" }
    ]
  },
  {
    "body": "this is a message sent to operator ",
    "from": {
      "display_name": "[email protected]",
      "organization_details": { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" },
      "type": "SHOP_USER"
    },
    "to": [
      { "display_name": "Operator", "type": "OPERATOR" }
    ]
  },
  {
    "body": "this is a msg from operator to seller ",
    "from": {
      "display_name": "Operator",
      "organization_details": { "display_name": "Operator", "type": "OPERATOR" },
      "type": "OPERATOR_USER"
    },
    "to": [
      { "display_name": "Taufiq Live Store", "id": "2001", "type": "SHOP" }
    ]
  }
];

const arr = conferenceDays.filter(({ from = {}, to = [] }) =>
  (from.organization_details.type === 'CUSTOMER') || 
  (to.some(({ type }) => type === 'CUSTOMER'))
);

console.log(arr);

uj5u.com熱心網友回復:

有一個名為 filter 的函式用于陣列,它完全符合你的要求,你可以在這里閱讀它,但我也在這里寫了一個例子。

假設我們有陣列并且我們想要過濾所有小于或等于 2 的值,我們應該在 array.filter 回呼中創建這樣一個條件,只有大于 2 的值才回傳 true。在您的情況下,您只需要檢查屬性以匹配您想要的內容,希望有所幫助。

    let array = [1, 2, 3, 4, 5];
    console.log(array.filter(element => {
        return element > 2;
    }));

uj5u.com熱心網友回復:

這是您的解決方案。如果您的to陣列中只有 1 個元素,它將起作用

const arr = [
    {
        body: "Could you please elaborate on the discount",
        from: {
            display_name: "vandhana jayaprakash",
            organization_details: {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "SELLER_USER",
            },
            type: "CUSTOMER_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "OPERATOR",
            },
        ],
    },
    {
        body: "for testing purpose",
        from: {
            display_name: "vandhana jayaprakash",
            organization_details: {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "CUSTOMER",
            },
            type: "CUSTOMER_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
            {
                display_name: "Operator",
                type: "OPERATOR",
            },
        ],
    },
    {
        body: "i need to know about warranty ",
        from: {
            display_name: "vandhana jayaprakash",
            organization_details: {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "CUSTOMER",
            },
            type: "CUSTOMER_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
        ],
    },
    {
        body: "this is a test messgae from seller on dec 17 21",
        from: {
            display_name: "[email protected]",
            organization_details: {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
            type: "SHOP_USER",
        },
        to: [
            {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "CUSTOMER",
            },
        ],
    },
    {
        body: "hi there",
        from: {
            display_name: "Operator",
            organization_details: {
                display_name: "Operator",
                type: "OPERATOR",
            },
            type: "OPERATOR_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
            {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "CUSTOMER",
            },
        ],
    },
    {
        body: "hello this is a test messsage on jan 5 2022",
        from: {
            display_name: "vandhana jayaprakash",
            organization_details: {
                display_name: "vandhana jayaprakash",
                id: "2211",
                type: "CUSTOMER",
            },
            type: "CUSTOMER_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
            {
                display_name: "Operator",
                type: "OPERATOR",
            },
        ],
    },
    {
        body: "this is a message sent to operator ",
        from: {
            display_name: "[email protected]",
            organization_details: {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
            type: "SHOP_USER",
        },
        to: [
            {
                display_name: "Operator",
                type: "OPERATOR",
            },
        ],
    },
    {
        body: "this is a msg from operator to seller ",
        from: {
            display_name: "Operator",
            organization_details: {
                display_name: "Operator",
                type: "OPERATOR",
            },
            type: "OPERATOR_USER",
        },
        to: [
            {
                display_name: "Taufiq Live Store",
                id: "2001",
                type: "SHOP",
            },
        ],
    },
];

// Previous array length
console.log(arr.length);

arr.forEach((value, i) => {
// If the condition is true than remove that value from the array
if (
    (value.from.organization_details.type == "SELLER_USER" &&
        value.to[0].type === "OPERATOR") ||
    (value.from.organization_details.type == "OPERATOR_USER" && value.to[0].type === "SHOP")
) {
    arr.splice(i, 1);
}
});

// Array length after removing data from array
console.log(arr.length);

轉載請註明出處,本文鏈接:https://www.uj5u.com/net/404631.html

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