class Configuration {
// Define a static property (shared across the entire class)
static environment = "production";
// A static method to safely access the static property
static getEnvironment() {
// Use the class name or 'this' inside static methods to access static members
return Configuration.environment;
}
// A static method to modify the static property with validation
static setEnvironment(newEnv) {
if (typeof newEnv === "string" && newEnv.trim() !== "") {
Configuration.environment = newEnv;
}
}
}
// --- Example Usage ---
// 1. Accessing the static property/method directly via the Class Name (Best Practice)
console.log(`Current Environment: ${Configuration.getEnvironment()}`);
// 2. Modifying the static property via a static setter function
Configuration.setEnvironment("staging");
console.log(`Updated Environment: ${Configuration.getEnvironment()}`);
// 3. Direct access (if the static property is public)
console.log(`Direct Property Access: ${Configuration.environment}`);
/*
* Note on Instances:
* const configInstance = new Configuration();
* console.log(configInstance.environment); // undefined!
* Instances cannot access static properties directly.
*/
/*
run:
Current Environment: production
Updated Environment: staging
Direct Property Access: staging
*/
