string comma speprated to javascript array code example

Example 1: separatly fetch a strings with commas inn js

$(function(){
    var s = "jpeg, jpg, gif, png";
    var match = s.split(', ')
    console.log(match)
    for (var a in match)
    {
        var variable = match[a]
        console.log(variable)
    }
})

Example 2: join in array

var a = ['Wind', 'Water', 'Fire'];
a.join();      // 'Wind,Water,Fire'
a.join(', ');  // 'Wind, Water, Fire'
a.join(' + '); // 'Wind + Water + Fire'
a.join('');    // 'WindWaterFire'