Tutorial for Beginners 8 - Reading and Writing Files using fs module

File I/O is provided by simple wrappers around standard POSIX functions. To use this module do require(’fs’). All the methods have asynchronous and synchronous forms. The asynchronous form always takes a completion callback as its last argument. The arguments passed to the completion callback depend on the method, but the first argument is always reserved for an exception. If the operation was completed successfully, then the first argument will be null or undefined. ★★★Top Online Courses From ProgrammingKnowledge ★★★ Python Programming Course ➡️ ⚫️ Java Programming Course ➡️ ⚫️ Bash Shell Scripting Course ➡️ ⚫️ Linux Command Line Tutorials ➡️ ... #ProgrammingKnowledge # #Beginners #debugger #node #debugging #Modules #Module #Custom #Nodejs 20161124 8fssCpuqkLo