define methods of objects in javascript

1/// OBJECTS IN JAVASCRIPT
2const testScore = {
3  damon: 89,
4  shawn: 91,
5  keenan: 80,
6  kim: 89,
7};
8
9Object.keys(testScore);  // gives all keys
10Object.values(testScore); // gives all values
11Object.entries(testScore); // gives nested arrays of key-value pairs
12
13// YOU CAN USE ( FOR-IN )  LOOP FOR ITERATION OVER OBJECTS
14for (let person in testScore) {...} 
15
16// WE CAN'T DIRECTLY USE ( FOR-OF ) LOOP IN OBJECTS BUT WE CAN DO Like THIS:
17for(let score of Object.values(testScore)){
18  	console.log(score)  // 89 91 80 89 
19}
20
21

1objectName.methodname = functionName;
2
3var myObj = {
4  myMethod: function(params) {
5    // ...do something
6  }
7
8  // OR THIS WORKS TOO
9
10  myOtherMethod(params) {
11    // ...do something else
12  }
13};
14