Proxy Has Example

ProxyHasExample.js

const target = { name: 'Alice', age: 30 };

const handler = {
    has: function(target, prop) {
        console.log(`Checking if property ${prop} is in target.`);
        return prop in target;
    }
};

const proxy = new Proxy(target, handler);

console.log('name' in proxy);  // Logs: Checking if property name is in target. Output: true
console.log('height' in proxy);  // Logs: Checking if property height is in target. Output: false