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Get Programming with JavaScript - Listing 18.08

Listing 18.08 - Converting a command string into a command object

function parseCommand (commandString) {
    var commandWords = commandString.split(" ");
    var command = {
        type: commandWords.shift()
    };

    if (command.type === "go" || command.type === "use") {
        command.direction = commandWords.pop();
    }

    command.item = commandWords.join(" ");

    return command;
}