callback-functions.js

// Callback functions
//built-in callback functions
//setTimeout, Arr.forEach, geolocation.getCurrentPosition
//make your own callback functions


//setTimeout( hello, 2000, 'Bob')
let names = ['Inga','Tom','Mattias','Carlos'];
names.forEach(hello);

navigator.geolocation.getCurrentPosition(gotPosition, positionError, {});

function gotPosition(pos){
    
}
function positionError(err){
    
}


function doThing(other){
    let x = 7;
    //do lots of other things
    //...
    let name = 'Steve';
    other(name);
}

function hello(nm, idx, arr){
    console.log('hello', nm);
}

/** 
doThing(hello);
**/