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September 22, 2025 21:18
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JavaScript Address Book Object
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| // JavaScript Address Book Object | |
| // Creates objects to store people's address information | |
| // Address constructor function | |
| function Address(name, street, city, state, zipCode) { | |
| this.name = name; | |
| this.street = street; | |
| this.city = city; | |
| this.state = state; | |
| this.zipCode = zipCode; | |
| // Method to display address information | |
| this.displayAddress = function() { | |
| return `${this.name}\n${this.street}\n${this.city}, ${this.state} ${this.zipCode}`; | |
| }; | |
| } | |
| // Create address objects using the constructor | |
| const addresses = [ | |
| new Address("John Smith", "123 Main St", "New York", "NY", "10001"), | |
| new Address("Jane Doe", "456 Oak Ave", "Los Angeles", "CA", "90210"), | |
| new Address("Bob Johnson", "789 Pine Rd", "Chicago", "IL", "60601") | |
| ]; | |
| // Alternative: Object literal approach | |
| const addressBook = { | |
| contacts: [ | |
| { | |
| name: "Alice Brown", | |
| street: "321 Elm St", | |
| city: "Miami", | |
| state: "FL", | |
| zipCode: "33101" | |
| }, | |
| { | |
| name: "Charlie Wilson", | |
| street: "654 Maple Dr", | |
| city: "Seattle", | |
| state: "WA", | |
| zipCode: "98101" | |
| } | |
| ], | |
| // Method to add a new address | |
| addAddress: function(name, street, city, state, zipCode) { | |
| this.contacts.push({ | |
| name: name, | |
| street: street, | |
| city: city, | |
| state: state, | |
| zipCode: zipCode | |
| }); | |
| }, | |
| // Method to find an address by name | |
| findByName: function(name) { | |
| return this.contacts.find(contact => contact.name === name); | |
| }, | |
| // Method to display all addresses | |
| displayAll: function() { | |
| this.contacts.forEach(contact => { | |
| console.log(`${contact.name}\n${contact.street}\n${contact.city}, ${contact.state} ${contact.zipCode}\n`); | |
| }); | |
| } | |
| }; | |
| // Example usage: | |
| console.log("Using constructor function:"); | |
| addresses.forEach(addr => console.log(addr.displayAddress() + "\n")); | |
| console.log("\nUsing object literal approach:"); | |
| addressBook.displayAll(); | |
| // Add a new address | |
| addressBook.addAddress("David Lee", "987 Cedar Ln", "Austin", "TX", "78701"); | |
| console.log("\nAfter adding David Lee:"); | |
| console.log(addressBook.findByName("David Lee")); | |
| // Export for use in other modules (if using Node.js) | |
| if (typeof module !== 'undefined' && module.exports) { | |
| module.exports = { Address, addressBook }; | |
| } |
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