var fakeSwitch = {
    test0: function() {},
    test1: function() {},
    test2: function() {},
    test3: function() {},
    test4: function() {}
 }

function testFakeSwitch(item) {
    fakeSwitch[item]()
}

function testRealSwitch(item) {
    switch(item) {
        case 'test0':
            break
        case 'test1':
            break
        case 'test2':
            break
        case 'test3':
            break
        case 'test4':
            break
    }
}

// Test Real Switch
setTimeout(function() {
    var timer = performance.now()
    for(var i = 0; i < 1000000; i++) {
        testRealSwitch('test4')
    }
    console.log('real: ' + (performance.now() - timer))
}, 0)

// Test Fake Switch
setTimeout(function() {
    var timer = performance.now()
    for(var i = 0; i < 1000000; i++) {
        testFakeSwitch('test4')
    }
    console.log('fake: ' + (performance.now() - timer))
}, 500)