JS-Object

1. Program and observe the following requirements:

• Create a null object and set its variable name as user;
• Add a name attribute and set its value as John;
• Add a surname attribute and set its value as Mike;
• Modify the value of name attribute as Peter;
• Delete name attribute of user.

2. Program and observe the following requirements: calculate how many pieces of fruit there are in the fruit object and the output should be 50.

var fruit = {
apple: 20,
pear: 20,
peach: 10
};
// write your code here...

Requirements

Create a js document and complete the above requirements.