如何从 object 中提取具有 typescript 中的属性和数组的数组？

Question

I have an object which always have a property and an array. When I print it out with console.log(obj) . It likes the following.

 ProjectName: MyTest1
 [0] { foo: 1, bar: 2}
 [1] { foo: 3, bar: 4}
 [2] { foo: 5, bar: 6} 

Or

ProjectName: MyTest2
[0] { foo: 1, bar: 2}
[1] { foo: 3, bar: 4}
[2] { foo: 5, bar: 6} 
[3] { foo: 6, bar: 7}

UPDATE

There are hundreds of them from backend, so the array's size is not fixed. But the object is always a single property plus an array. This object is a combination of a json object and an array. I want a code to extract it. Now I want extract the array from the object and assign it to an array variable so I can loop through it. Which means I must get rid of the first property.

UPDATE1

I want the new object is extracted from the original object by code rather than hard code since we have many dynamic size array.

 [0] { foo: 1, bar: 2}
 [1] { foo: 3, bar: 4}
 [2] { foo: 5, bar: 6}

Answer 1

Try this?

let superArray: [] = [];

const obj = {
     a: [{ foo: 1, bar: 2}],
     b: [{ foo: 3, bar: 4}],
     c: [{ foo: 5, bar: 6}] 
};

for (var array in obj) {
    superArray = superArray.concat(obj[array]);
}

console.log(superArray);

Answer 2

see my comment for "already asked"

for short:

var mm=[ 
  { foo: 1, bar: 2} , { foo: 3, bar: 4} ,  { foo: 5, bar: 6} , { foo: 6, bar: 7}
 ];
 mm.property="Hello world";
 console.log("\n1) IsArray ?------------");
 console.log( mm instanceof Array ? "Array":"Other...");
 console.log("2) see mm");
 console.log(mm);


 console.log("\nA------- all properties ---------");
 for (var i in mm) {
  if(mm.hasOwnProperty(i)) {
  console.log("property "+i+"=",mm[i]);
  }
 }


 console.log("\nB------ Array indexes ----------");
 for (var i=0; i<mm.length;i++) {
   console.log("property "+i+"=",mm[i]);
 }

 var mm2=JSON.parse(JSON.stringify(mm));
 mm2[9]="index 10???";
 console.log("\nC------ Array indexes ----------");
 for (var i=0; i<mm2.length;i++) {
   console.log("property "+i+"=",mm2[i]);
 }

output:

Advice

Avoid mixing properties and array indexes, use a supplementary property to store your array.

let myDatas={
 datas : [{xx:yy},{zz:ff}],
 title : "xxxx"
};