查询打字稿中的对象数组

Question

I have an array of JSON objects

array = [{name: "will", age: "18"}
         {name: "Elliott", age: "21"}
        ] 

Is there a way to get the "age" for any given "name" (as you would do with a SQL statement when querying a database?

Answer 1

Yes.

let array = [
  { name: "will", age: "18"}, 
  { name: "john", age: "18"}, 
  { name: "elliott", age: "21"}
]

array.filter((e) => { return e.name === 'john' })

Result

[ { name: 'john', age: '18' } ]

Answer 2

let queryName = 'will';
array.forEach((obj) => {
    if (obj.name === queryName) {
        console.log(obj.name, obj.age); // will 18
    }
});