javascript object get value by key in array

1Object.keys(object).find(key => object[key] === value)

1let arr = [
2    { name:"string 1", value:"this", other: "that" },
3    { name:"string 2", value:"this", other: "that" }
4];
5
6let obj = arr.find((o, i) => {
7    if (o.name === 'string 1') {
8        arr[i] = { name: 'new string', value: 'this', other: 'that' };
9        return true; // stop searching
10    }
11});
12
13console.log(arr);

1var obj = {
2   a: "A",
3   b: "B",
4   c: "C"
5}
6
7console.log(obj.a);  // return string : A
8
9var name = "a";
10console.log(obj[name]);

1function search(nameKey, myArray){
2    for (var i=0; i < myArray.length; i++) {
3        if (myArray[i].name === nameKey) {
4            return myArray[i];
5        }
6    }
7}
8
9var array = [
10    { name:"string 1", value:"this", other: "that" },
11    { name:"string 2", value:"this", other: "that" }
12];
13
14var resultObject = search("string 1", array);
15