檢查對象鍵和值是否包含某些單詞

Question

我有一個帶有問題和答案對的 JSON 文件：

{
  "faq": {
    "How old is John?": "John is 30",
    "What color are Anna's eyes": "They are Blue",
    "What's the name of Anna and John child?": "His name is jack"
  }
}

如何為 John、Anna 和 Jack 過濾對象？

尋找約翰：

{
  "faq": {
    "How old is John?": "John is 30",
    "What's the name of Anna and John child?": "His name is jack"
  }
}

搜索 Anna 應該返回：

{
  "faq": {
    "What color are Anna's eyes": "They are Blue",
    "What's the name of Anna and John child?": "His name is jack"
  }
}

尋找傑克：

{
  "faq": {
    "What's the name of Anna and John child?": "His name is jack"
  }
}

有沒有辦法在鍵和值中搜索單個單詞？

Answer 1

這應該做你想做的。

 const that = { "faq": { "How old is John?": "John is 30", "What color are Anna's eyes": "They are Blue", "What's the name of Anna and John child?": "His name is jack" } } const filterKVcontains = (obj, str) => Object.fromEntries( Object.entries(obj).filter( e => e.some( it => (new RegExp(str, 'i')).test(it) ) ) ) const filtered = filterKVcontains(that.faq, 'john') const demo = document.createElement('pre') demo.innerHTML = JSON.stringify(filtered, null, 2) document.body.appendChild(demo)

讓我們關注變量obj ，我們把它給

• Object.entries()返回一個由obj的屬性組成的數組，其中每個元素本身就是一個包含兩個條目的數組，一個用於鍵，另一個用於值。

我們將這個 k/v 條目數組傳遞給

• Array.prototype.filter()只返回它所操作的數組元素，滿足它作為參數接收的函數中定義的標准。 我們在鍵/值對列表上運行它，條件如下：

  • Array.prototype.some()如果數組的至少一個元素（現在我們的鍵/值對）滿足通過函數作為參數給出的條件，則返回 true：

    • RegExp.prototype.test()如果輸入的字符串與它運行的正則表達式匹配，則返回 true。 我們的正則表達式是圍繞str構建的，它是filterKVcontains的參數

• Object.fromEntries()從過濾的鍵/值條目列表中跳出並重建對象

Answer 2

假設你的對象是

const that = {
  "faq": {
    "How old is John?": "John is 30",
    "What color are Anna's eyes": "They are Blue",
    "What's the name of Anna and John child?": "His name is jack"
  }
}

您可以過濾包含“John”的鍵

Object.keys(that.faq).filter(e => e.indexOf("John") >= 0)

“安娜”

Object.keys(that.faq).filter(e => e.indexOf("Anna") >= 0)

等等

Answer 3

這是一個簡單的函數。它檢查對象中的每一對，如果鍵或值匹配，它將在新對象中返回。

const search = (term) => {
    let results = {};
    for (item in data.faq) {
        if (item.toLowerCase().includes(term.toLowerCase()) || data.faq[item].toLowerCase().includes(term.toLowerCase())) {
            results = {...results,[item]:data.faq[item]};
        }
    }
    return {faq: results};
}