How to find object in array by property in javascript?

Question

Exist an array with a lot of objects. Required to find an object or objects in this array by property.

Input obj:

  var Obj = [
    {"start": 0, "length": 3, "style": "text"},
    {"start": 4, "length": 2, "style": "operator"},
    {"start": 4, "length": 3, "style": "error"}
  ];

Output result: (search for "start" with value 4)

  var result = [
    {"start": 4, "length": 2, "style": "operator"},
    {"start": 4, "length": 3, "style": "error"}
  ];

Answer 1

Use filter function of array

var Obj = [
  {"start": 0, "length": 3, "style": "text"},
  {"start": 4, "length": 2, "style": "operator"},
  {"start": 4, "length": 3, "style": "error"}
];

var result = Obj.filter(x => x.start === 4);
console.log(result);