Colour Jump Table

colour_jump.js

const stop = () => { console.log("stop called"); }
const go = () => { console.log("go called"); }

const colour = 'red';

const handleColour = 
{
    'red'               : stop,
    'amber'             : stop,
    'green'             : go,
    'flashing amber'    : go
}

handleColour[colour]();   // logs "stop called"