Question

美好的一天

我正在尝试使用自动完成的jquery框架..买我的问题是我如何才能从json文件或仅是如下所示的快速键入的json对象获取对象，并将所有Object.values（arry）获取到像下面这样的单个数组。

[“ samue”，“ anthon”，“ Harmony”，“ Johnson”]

，并且必须是数组。.因为自动完成框架仅适用于数组

const myobj = [
    {
      "name": "samuel",
      "surname": "anthony"
    },
    {
      "name": "Harmony",
      "surname": "Johnson"
    }
  ]

  const file = "json/user.json";

  fetch('file')
  .then(res => res.json())
  .then((data) =>{
      let i = 0;
      const val = Object.values(data[i]);
      if(i < data.length){
        i++;
        const all = Object.values(data[i]);
        console.log(all);
      }

      var input = document.getElementById("countries");
      var awesomplete = new Awesomplete(input, {
          minChars: 1,
          maxItems: 5,
          autoFirst: true
      });
      awesomplete.list = val;

      //wanted array of
      //["samuel", "anthon", "school"]
  })

Answer 1

要将myObj转换为所需的数组，可以使用.flatMap和Object.values，如下所示：

const myobj = [{
    "name": "samuel",
    "surname": "anthony"
  },
  {
    "name": "Harmony",
    "surname": "Johnson"
  }
];

res = myobj.flatMap(Object.values);
console.log(res);

但是，请注意。 flatMap并非在所有浏览器中都可用，因此并不具有最佳的浏览器兼容性。

如果无法使用.flatMap，则可以使用.reduce和destructing assingment作为替代：

const myobj = [{
    "name": "samuel",
    "surname": "anthony"
  },
  {
    "name": "Harmony",
    "surname": "Johnson"
  }
];

res = myobj.reduce((acc, {name, surname}) => [...acc, name, surname], []);
console.log(res);

Answer 2

使用const myobj = [ { "name": "samuel", "surname": "anthony" }, { "name": "Harmony", "surname": "Johnson" } ] console.log(myobj.reduce((acc,e)=>{acc.push(e.name);acc.push(e.surname);return acc},[]))

forEach

使用const myobj = [ { "name": "samuel", "surname": "anthony" }, { "name": "Harmony", "surname": "Johnson" } ] var a=[]; myobj.forEach((e)=>{a.push(e.name);a.push(e.surname)}) console.log(a)

setup.py::build_deps::run()
Failed to run 'bash ../tools/build_pytorch_libs.sh --use-fbgemm --use-nnpack --use-mkldnn --use-qnnpack caffe2'

Answer 3

您可以使用push()传播算子将... Object.values（obj）转换为所需数组

const myobj = [
    {
      "name": "samuel",
      "surname": "anthony"
    },
    {
      "name": "Harmony",
      "surname": "Johnson"
    }
  ]
let arr = []
myobj.forEach(obj=> arr.push(...Object.values(obj)));
console.log(arr);

Answer 4

您可以使用Array.map() method

一个示例用例可能是：

const oldArr = [
    {
      "name": "Samuel",
      "surname": "anthony"
    },
    {
      "name": "Harmony",
      "surname": "Johnson"
    }
 ]

const newArr = oldArr.map(x => x.name) // ['Samuel', 'Harmony']

Answer 5

展平对象：

const myobj = [{
"name": "samuel",
"surname": "anthony"
  },
  {
"name": "Harmony",
"surname": "Johnson"
  }
];

var flatten=myobj.reduce((arr, v)=> [...arr,...[v.name,v.surname]],[]);
console.log(flatten);

将Json Object数组值转换为单个数组

5 个答案: