Node.js Query String29 Aug 2024 | 1 min read The Node.js Query String provides methods to deal with query string. It can be used to convert query string into JSON object and vice-versa. To use query string module, you need to use require('querystring'). Node.js Query String MethodsThe Node.js Query String utility has four methods. The two important methods are given below.
Node.js Query String Example 1: parse()Let's see a simple example of Node.js Query String parse() method. File: query-string-example1.js ![]() Node.js Query String Example 2: stringify()Let's see a simple example of Node.js Query String stringify() method. File: query-string-example2.js ![]() Next TopicNode.js ZLIB |
Node.js Web Module What is Web Server Web Server is a software program that handles HTTP requests sent by HTTP clients like web browsers, and returns web pages in response to the clients. Web servers usually respond with html documents along with images, style sheets and scripts. Most...
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Node.js provides Buffer class to store raw data similar to an array of integers but corresponds to a raw memory allocation outside the V8 heap. Buffer class is used because pure JavaScript is not nice to binary data. So, when dealing with TCP streams or...
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The Node.js Zlib module is used to provide compression and decompression (zip and unzip) functionalities. It is implemented using Gzip and deflate/inflate. The zlib module can be accessed using: const zlib = require('zlib'); Compressing and decompressing a file can be done by piping the source stream data into...
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Node.js provides a simple TCP based protocol and built-in debugging client. For debugging your JavaScript file, you can use debug argument followed by the js file name you want to debug. Syntax: node debug [script.js | -e "script" | <host>:<port>] Example: node debug main.js If you make any error: If you...
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Testing The Node.js Assert is the most elementary way to write tests. It provides no feedback when running your test unless one fails. The assert module provides a simple set of assertion tests that can be used to test invariants. The module is intended for internal...
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The Node.js applications generally face four types of errors: Standard JavaScript errors i.e. <EvalError>, <SyntaxError>, <RangeError>, <ReferenceError>, <TypeError>, <URIError> etc. System errors User-specified errors Assertion errors Example 1 Let's take an example to deploy standard JavaScript error - ReferenceError. File: error_example1.js // Throws with a ReferenceError because b is undefined try { ...
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Node.js provides the facility to get process information such as process id, architecture, platform, version, release, uptime, upu usage etc. It can also be used to kill process, set uid, set groups, unmask etc. The process is a global object, an instance of EventEmitter, can be accessed...
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What is V8 V8 is an open source JavaScript engine developed by the Chromium project for the Google Chrome web browser. It is written in C++. Now a days, it is used in many projects such as Couchbase, MongoDB and Node.js. V8 in Node.js The module represents interfaces...
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What is TLS/SSL TLS stands for Transport Layer Security. It is the successor to Secure Sockets Layer (SSL). TLS along with SSL is used for cryptographic protocols to secure communication over the web. TLS uses public-key cryptography to encrypt messages. It encrypts communication generally on the TCP...
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In Node.js applications, Events and Callbacks concepts are used to provide concurrency. As Node.js applications are single threaded and every API of Node js are asynchronous. So it uses async function to maintain the concurrency. Node uses observer pattern. Node thread keeps an event loop and...
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