25. Occurrences of Each Char

Understand object in js - 

1. Creating an Object: You can create an object using curly braces <strong>{}</strong> and defining key-value pairs inside.

let person = {
 name: 'John',
 age: 25,
 city: 'New York'
};

2. Accessing Object Properties: You can access the values of an object using dot notation or square brackets.

console.log(person.name); // Output: John
console.log(person['age']); // Output: 25

3. Adding and Modifying Properties: You can add new properties or modify existing ones.

person.job = 'Developer';
person.age = 26;

4. Object Methods: You can include functions as values in an object, and these are called methods.

let person = {
 name: 'John',
 greet: function() {
   console.log('Hello, my name is ' + this.name);
 }
};
person.greet(); // Output: Hello, my name is John

5. Deleting Properties: You can delete properties from an object using the <strong>delete</strong> keyword.

delete person.city;

6. Object Iteration: You can loop through the keys or values of an object using <strong>for...in</strong> loop.

for (let key in person) {
 console.log(key + ': ' + person[key]);
}