我想知道如何排除(而不是删除)特定对象,然后在javascript中对嵌套数组对象进行排序,
下面的函数对数组对象进行排序。我需要排除不具有数量属性的对象,然后在javascript中对仅具有数量的对象进行排序并映射该对象(需要使用排除的obj和排序的obj)。

this.providerList = [{id:"transferwise", amount:"1000"}, {id:"wordlremit", amount:"4000", {id:"instarem", amount:"3000"}, {country: "Singapore", scn: "SG"}, {country: "India", scn: "IN"}];


 sortAndFilterProviders() {
    let myList = [];
    myList = [...this.providerList];
    myList.push.apply(myList, this.apiproviderdata.apiproviders);
    // var mergeList = myList.concat(this.query);
    // console.log(mergeList);
    myList.sort(function (a, b) {
      var a1 = a.amount, b1 = b.amount;
      if (a1 == b1) return 0;
      return a1 > b1 ? 1 : -1;
    });
    this.providerList = [...myList];
    return this.providerList;
  }


expected output
  country: Singapore, India
  Sorted Amount : Transferwise , Instarem, Worldremit

最佳答案

您可以使用filter()创建具有/不具有该属性的数组。然后排序所需的数组。最后,按照以下方式concat()使用它们:



let providerList = [{id:"transferwise", amount:"1000"}, {id:"wordlremit", amount:"4000"}, {id:"instarem", amount:"3000"}, {country: "Singapore", scn: "SG"}, {country: "India", scn: "IN"}];

let amount = providerList.filter( item => item.hasOwnProperty('amount')).sort((a,b)=> a.amount - b.amount);
let notAmount = providerList.filter( item => !item.hasOwnProperty('amount'));
var res = notAmount.concat(amount)
console.log(res);

07-24 09:44
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