将 Json 对象数组值转换为单个数组

Question

再会

我正在尝试使用自动完成 jquery 框架.. 购买我的问题是如何从 json 文件或仅像下面这样的快速键入的 json 对象获取我的对象并将所有 Object.values(arry) 获取到单个数组像下面..

["samue", "anthon", "Harmony", "Johnson"]

并且必须是一个数组..因为自动完成框架只适用于数组

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转换为您想要的数组，您可以使用.flatMap和Object.values如下所示：

 const myobj = [{ "name": "samuel", "surname": "anthony" }, { "name": "Harmony", "surname": "Johnson" } ]; const 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，因此它没有最好的浏览器兼容性。

如果您无法使用.flatMap可以使用.reduce和破坏任务作为一种替代方案：

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

Answer 2

使用reduce

 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},[]))

使用forEach

 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)

Answer 3

您可以使用...展开运算符push() Object.values(obj) 到想要的数组中

 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() 方法

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);