How can I create a generic condition checker between objects in Node.js?

Other Questions JavaScript
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1

In Node.js, I want to create a function that can generically compare two objects and determine if a specific condition is met. How can I achieve this when working with object properties and values in a reusable way within my application? Any examples or guidelines would be greatly appreciated.

2

"Hey there! Comparing objects in Node.js can be a bit tricky, but with a bit of planning, it’s totally doable! What you want to achieve is a generic function to check objects based on certain conditions. Below is a basic example using JavaScript that can be adapted to your needs.

function compareObjects(obj1, obj2, conditionFn) {
  for (let key in obj1) {
    if (obj1.hasOwnProperty(key) && obj2.hasOwnProperty(key)) {
      if (!conditionFn(obj1[key], obj2[key])) {
        return false;
      }
    }
  }
  return true;
}

// Usage example with a simple condition function
const condition = (a, b) => a === b;
const obj1 = { a: 1, b: 2 };
const obj2 = { a: 1, b: 2 };

console.log(compareObjects(obj1, obj2, condition)); // Output: true

This setup gives you the flexibility to plug in different conditions as you see fit. Feel free to ask if you need more details! :blush:"

3

Hey! Here’s a concise function for comparing objects:

function compare(obj1, obj2, compareFn) {
  return Object.keys(obj1).every(key => (
    obj2.hasOwnProperty(key) && compareFn(obj1[key], obj2[key])
  ));
}

// Usage
const isEqual = (x, y) => x === y;
const objA = { a: 1, b: 2 };
const objB = { a: 1, b: 2 };

console.log(compare(objA, objB, isEqual)); // true

Replace isEqual if needed.