Run results for: Switch vs Object Literal

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Browser: Chrome 103

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Switch	85351.2 Ops/sec
Object Literal	103232.0 Ops/sec

Script Preparation code:

var str = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
str = str.charAt(Math.floor(Math.random() * str.length));

Tests:

Switch
switch (str) { case 'a': console.log('a'); break; case 'b': console.log('b'); break; case 'c': console.log('c'); break; case 'd': console.log('d'); break; case 'e': console.log('e'); break; case 'f': console.log('f'); break; case 'g': console.log('g'); break; case 'h': console.log('h'); break; case 'i': console.log('i'); break; case 'j': console.log('j'); break; case 'k': console.log('k'); break; case 'l': console.log('l'); break; case 'm': console.log('m'); break; case 'n': console.log('n'); break; case 'o': console.log('o'); break; case 'p': console.log('p'); break; case 'q': console.log('q'); break; case 'r': console.log('r'); break; case 's': console.log('s'); break; case 't': console.log('t'); break; case 'u': console.log('u'); break; case 'v': console.log('v'); break; case 'w': console.log('w'); break; case 'x': console.log('x'); break; case 'y': console.log('y'); break; case 'z': console.log('z'); break; case 'A': console.log('A'); break; case 'B': console.log('B'); break; case 'C': console.log('C'); break; case 'D': console.log('D'); break; case 'E': console.log('E'); break; case 'F': console.log('F'); break; case 'G': console.log('G'); break; case 'H': console.log('H'); break; case 'I': console.log('I'); break; case 'J': console.log('J'); break; case 'K': console.log('K'); break; case 'L': console.log('L'); break; case 'M': console.log('M'); break; case 'N': console.log('N'); break; case 'O': console.log('O'); break; case 'P': console.log('P'); break; case 'Q': console.log('Q'); break; case 'R': console.log('R'); break; case 'S': console.log('S'); break; case 'T': console.log('T'); break; case 'U': console.log('U'); break; case 'V': console.log('V'); break; case 'W': console.log('W'); break; case 'X': console.log('X'); break; case 'Y': console.log('Y'); break; case 'Z': console.log('Z'); break; }
Object Literal
var objLiteral = { a: function() { console.log('a'); }, b: function() { console.log('b'); }, c: function() { console.log('c'); }, d: function() { console.log('d'); }, e: function() { console.log('e'); }, f: function() { console.log('f'); }, g: function() { console.log('g'); }, h: function() { console.log('h'); }, i: function() { console.log('i'); }, j: function() { console.log('j'); }, k: function() { console.log('k'); }, l: function() { console.log('l'); }, m: function() { console.log('m'); }, n: function() { console.log('n'); }, o: function() { console.log('o'); }, p: function() { console.log('p'); }, q: function() { console.log('q'); }, r: function() { console.log('r'); }, s: function() { console.log('s'); }, t: function() { console.log('t'); }, u: function() { console.log('u'); }, v: function() { console.log('v'); }, w: function() { console.log('w'); }, x: function() { console.log('x'); }, y: function() { console.log('y'); }, z: function() { console.log('z'); }, A: function() { console.log('A'); }, B: function() { console.log('B'); }, C: function() { console.log('C'); }, D: function() { console.log('D'); }, E: function() { console.log('E'); }, F: function() { console.log('F'); }, G: function() { console.log('G'); }, H: function() { console.log('H'); }, I: function() { console.log('I'); }, J: function() { console.log('J'); }, K: function() { console.log('K'); }, L: function() { console.log('L'); }, M: function() { console.log('M'); }, N: function() { console.log('N'); }, O: function() { console.log('O'); }, P: function() { console.log('P'); }, Q: function() { console.log('Q'); }, R: function() { console.log('R'); }, S: function() { console.log('S'); }, T: function() { console.log('T'); }, U: function() { console.log('U'); }, V: function() { console.log('V'); }, W: function() { console.log('W'); }, X: function() { console.log('X'); }, Y: function() { console.log('Y'); }, Z: function() { console.log('Z'); }, } objLiteral[str]();