Learn Angular.JS from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
Asked by Nandita Last Modified
Answer In Node.js, chaining typically refers to method chaining, a programming technique that allows you to call multiple methods on an object in a single, fluent statement. It involves invoking methods one after another on the same object, where each method returns the modified object, allowing the subsequent method to be called on the result.
Here's a simple example to illustrate method chaining in Node.js:
class Calculator { constructor(value = 0) { this.result = value; } add(number) { this.result += number; return this; // Return the instance for chaining } subtract(number) { this.result -= number; return this; // Return the instance for chaining } multiply(number) { this.result *= number; return this; // Return the instance for chaining } divide(number) { this.result /= number; return this; // Return the instance for chaining } } // Example usage of method chaining const calculator = new Calculator(); const result = calculator .add(5) .multiply(2) .subtract(3) .divide(2) .result; console.log(result); // Output: 4 In this example, the Calculator class has methods (add, subtract, multiply, divide) that perform mathematical operations and return the modified instance (this). This allows you to chain these methods together in a single statement.
Method chaining can lead to more readable and concise code, especially when performing a sequence of operations on an object. Many libraries and frameworks in the Node.js ecosystem, such as Express.js, use method chaining to configure and set up various aspects of the application.
It's important to note that not all methods are designed to support chaining. For chaining to work effectively, each method in the chain should return the object itself (or another object that also supports the same set of methods). Always check the documentation of the specific library or class to see if it supports method chaining.
Related Questions
Which JS Framework is Easy in between Angular JS and React JS ?
Which is Easy Angular or React JS ?
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRelated Lessons
Recommended Articles
Make a Career in Mobile Application Programming
Almost all of us, inside the pocket, bag or on the table have a mobile phone, out of which 90% of us have a smartphone. The technology is advancing rapidly. When it comes to mobile phones, people today want much more than just making phone calls and playing games on the go. People now want instant access to all their business...
Read full article >
Learn Microsoft Excel
Microsoft Excel is an electronic spreadsheet tool which is commonly used for financial and statistical data processing. It has been developed by Microsoft and forms a major component of the widely used Microsoft Office. From individual users to the top IT companies, Excel is used worldwide. Excel is one of the most important...
Read full article >
What is Applications Engineering all about?
Applications engineering is a hot trend in the current IT market. An applications engineer is responsible for designing and application of technology products relating to various aspects of computing. To accomplish this, he/she has to work collaboratively with the company’s manufacturing, marketing, sales, and customer...
Read full article >
Learn Hadoop and Big Data
Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...
Read full article >
Looking for Angular.JS Training?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near youThe best tutors for Angular.JS Classes are on UrbanPro
The best Tutors for Angular.JS Classes are on UrbanPro
55
