Run results for: lookup table vs switch

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lookup	1035785.3 Ops/sec
switch	550848.0 Ops/sec

Tests:

lookup
const SOURCE = [ 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', ]; let a; var LOOKUP = { "ahello": function(v) { a = (v + "\n\n" + "hi"); }, "ahi": function(v) { a = (v + "\n\n" + "hello"); }, "abye": function(v) { a = (v + "\n\n" + "no"); }, "adie": function(v) { a = (v + "\n\n" + "you shot me"); }, "bhello": function(v) { a = (v + "\n\n" + "hi"); }, "bhi": function(v) { a = (v + "\n\n" + "hello"); }, "bbye": function(v) { a = (v + "\n\n" + "no"); }, "bdie": function(v) { a = (v + "\n\n" + "you shot me"); }, "hello": function(v) { a = (v + "\n\n" + "hi"); }, "hi": function(v) { a = (v + "\n\n" + "hello"); }, "bye": function(v) { a = (v + "\n\n" + "no"); }, "die": function(v) { a = (v + "\n\n" + "you shot me"); }, }; for(let value of SOURCE){ LOOKUP[value](value)}
switch
const SOURCE = [ 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', 'hello', 'hi', 'bye', 'die', 'die', 'bye', 'hi', 'hello', ]; let a; for(let value of SOURCE){ switch (value) { case "ahello": a = (value + "\n\n" + "hi"); case "ahi": a = (value + "\n\n" + "hello"); case "abye": a = (value + "\n\n" + "no"); case "adie": a = (value + "\n\n" + "you shot me"); case "bhello": a = (value + "\n\n" + "hi"); case "bhi": a = (value + "\n\n" + "hello"); case "bbye": a = (value + "\n\n" + "no"); case "bdie": a = (value + "\n\n" + "you shot me"); case "hello": a = (value + "\n\n" + "hi"); case "hi": a = (value + "\n\n" + "hello"); case "bye": a =(value + "\n\n" + "no"); case "die": a = (value + "\n\n" + "you shot me"); } }