How to capture the arrow keys in node.js

Question

What is the utf8 code for all four arrow keys (up down left right)?

I am learning node.js and I am trying to detect whenever these keys are being pressed.

He

Answer 1

A mix of Moezalez and user568109 answers worked for me:

var stdin = process.stdin;
// Don't set the rawMode to continue listening for other full length options.
stdin.resume();
stdin.setEncoding('utf8');

stdin.on('data', function(input) {
    // Take out the new line character at the end
    var option = input.substr(0, input.length - 1);
    switch (option) {
        case '\u001b[A':
            // Up
            break;
        case '\u001b[B':
            // Down
            break;
        case '\u001b[C':
            // Right
            break;
        case '\u001b[D':
            // Left
            break;
        case 'something_else':
            // Perform what something_else does 
            break;
    }
});