Keyboard Control in Node.js (REPL)
CTRL-C - This will terminate the current command. Pressing it twice will force you to exit.
CTRL-D - Exits Node.js (REPL)
tab - Autocompletes the local and global variable which is declared.
UP arrow - Helps you to traverse up through command history.
DOWN arrow - Helps you to traverse down through command history.
Underscore(_) - It allows you to access the last expression.
Commands in Node.js (REPL)
.load - Load a file in current instance. Usage (.load path_of_your_file/name_of_your_file.js)
.save - Save the current Node.js session to a file. Usage (.save path_of_your_file/name_of_your_file.js)
.help - Displays all the available commands
.exit - Exit the Node.js (REPL)
.clear - Clears all the expression written.
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