如何使用javascript订购嵌套数组对象

Question

I would like to know how to filter and get the object based on order using javascript

I have a obj as shown below and should filter based on order and concat.

`obj` with `no error key && amt > min` should display at the top in sorted manner by amt.
`obj` with `amt<min` should display next 
`obj` with `error` should display last

var output = orderData(obj);
function orderData(obj){
  var minData = obj.filter(e=>e.amt<e.min);
  var errData = obj.filter(e=>e.hasOwnProperty("error"));
  var validData = obj.filter(e=>!e.hasOwnProperty("min") && !e.hasOwnProperty("error"));
  var result = validData.concat(errData).concat(minData);
return result;
}

var obj =[{
 "id": "trans",
 "amt": 1000
},{
 "id": "fund",
 "amt": 500
},{
  "id": "inst",
  "amt": 2000,
  "error": "invalid"
},{
  "id": "wf",
  "amt": 600,
  "min":  2000
},{
  "id": "sf",
  "amt": 500,
  "min": "250"
}]

Expected Output:

[{
 "id": "fund",
 "amt": 500
},{
  "id": "sf",
  "amt": 500,
  "min": "250"
},{
 "id": "trans",
 "amt": 1000
},{
  "id": "wf",
  "amt": 600,
  "min":  2000
},{
  "id": "inst",
  "amt": 2000,
  "error": "invalid"
}]

Answer 1

I think this function will do what you want. It is similar to yours but includes the extra checks on the mins and valids . It then sorts each array by amt ascending before concatenating them together:

 var obj =[{ "id": "trans", "amt": 1000 },{ "id": "fund", "amt": 500 },{ "id": "inst", "amt": 2000, "error": "invalid" },{ "id": "wf", "amt": 600, "min": 2000 },{ "id": "sf", "amt": 500, "min": "250" }]; function sortObj(a, b) { return a.amt - b.amt; } function orderData(obj) { errors = obj.filter(e => e.hasOwnProperty('error')); errors.sort(sortObj); mins = obj.filter(e => !e.hasOwnProperty('error') && e.hasOwnProperty('min') && e.amt < e.min); mins.sort(sortObj); valids = obj.filter(e => !e.hasOwnProperty('error') && (!e.hasOwnProperty('min') || e.amt > e.min)); valids.sort(sortObj); return valids.concat(mins).concat(errors); } console.log(orderData(obj));