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Changing Directory in Node.js Node.js provides an fs module that allows you to work with the file system in a non-blocking way. One of the functions provided by this module is fs.readdir(), which allows you to read the contents of a directory. Changing the Current Working Directory
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How to Start PM2 Node Process with Flags If you are a developer who frequently works with Node.js and needs to manage multiple processes, PM2 is a great tool to help you monitor and control your applications. In this tutorial, I will show you how to start a PM2
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Returning the Sum of an Array If you have an array of numbers and you want to find the sum of all the numbers in the array, there are a couple of ways to accomplish this. One way is to use a for loop to iterate through the array and
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What is jQuery empty() method? jQuery empty() method is used to remove all the child elements and text content from the selected element(s). The method does not remove the selected element(s) itself, only its content. Syntax: $(selector).empty(); Example: Consider the following HTML code: <div id="
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Split Text and Join in JS Splitting and joining strings is a common task in JavaScript. It can be helpful in manipulating data, formatting text, and so on. Luckily, JavaScript provides built-in methods to split and join strings. Splitting Strings The split() method is used to split a string into
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JSON Won't Compile: "Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE'" If you are encountering the error message "Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE'" while trying to compile your JSON, it means
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How to Find the Last Word of a String in JavaScript If you're working with strings in JavaScript, you might need to find the last word of a string for various reasons. Here are a few ways you can achieve this: Method 1: Using Split and Pop You
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Understanding Composer Require Command Composer is a popular dependency management tool used in PHP projects. It allows developers to easily manage dependencies and libraries for their projects. One of the primary features of Composer is the ability to install packages and libraries from Packagist, which is the official repository for
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React Timer React Timer is a popular feature in React applications that allows users to count down or up to a specific time. This can be used for a variety of purposes, such as tracking the time remaining for an event or setting a time limit for an activity. Implementation
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Arrow Expression in JavaScript Arrow functions, also known as arrow expressions, were introduced in ECMAScript 6 (ES6) as a new syntax for defining functions in JavaScript. They provide a more concise way of writing functions and have a shorter syntax than traditional functions. Syntax The basic syntax of an arrow
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If Statement in JS If statement in JavaScript is a conditional statement used to execute a block of code if a particular condition is true. The syntax for writing an if statement is: if (condition) { // code to be executed if condition is true } The condition in the if statement is
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Function data_map() var data = [ ['a','b', 1], ['c','d', 2], ['e','f', 3], ['g','h', 4] ]; var newData = data.map(function(row){ return [row[0], row[2]]; }); The data_map() function creates a