Are you struggling with changing only the parent object in JavaScript without affecting its children objects? Look no further! Here are some tips to help you accomplish this task successfully.

1. Use the spread operator: In JavaScript, you can use the spread operator (...) to create a new object with the properties of the parent object. This way, you can modify the new object without affecting the original parent object. Here's an example:

const parentObject = { name: 'John', age: 25, children: { name: 'Sarah', age: 5 } };

const modifiedParentObject = { ...parentObject, age: 30 };

In this example, we use the spread operator to create a new object called modifiedParentObject with the properties of the parentObject. We then modify the age property of modifiedParentObject without affecting the original parentObject.

2. Use Object.assign method: Another way to change only the parent object in JavaScript is by using the Object.assign method. This method is used to copy the values of all enumerable own properties from one or more source objects to a target object. Here's how you can use it:

const parentObject = { name: 'John', age: 25, children: { name: 'Sarah', age: 5 } };

const modifiedParentObject = Object.assign({}, parentObject, { age: 30 });

In this example, we create a new object called modifiedParentObject using the Object.assign method. We pass an empty object as the target object, followed by the parentObject and the properties we want to modify.

3. Avoid direct mutation: It's important to avoid directly mutating the parent object if you want to change only the parent object. Modifying the parent object directly will also affect its children objects. Instead, use the methods mentioned above to create a new object with the desired changes.

In conclusion, changing only the parent object in JavaScript can be achieved by using the spread operator, Object.assign method, and avoiding direct mutation. By following these tips, you can modify the parent object without impacting its children objects, thus maintaining data integrity and consistency in your JavaScript code.