Run results for: switch vs if else

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
switch	3643612.5 Ops/sec
simple if else	4398175.0 Ops/sec

Tests:

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");
  }
}

​x
 
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");  }}

simple if else

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){
  if (value == "ahello") {
      a = (value + "\n\n" + "hi");
  } else if (value == "ahi"){
      a = (value + "\n\n" + "hello");
    } else if (value == "abye"){
      a = (value + "\n\n" + "no");
    } else if (value == "adie"){
      a = (value + "\n\n" + "you shot me");
    } else if (value == "bhello"){
      a = (value + "\n\n" + "hi");
    } else if (value == "bhi"){
      a = (value + "\n\n" + "hello");
    } else if (value == "bbye"){
      a = (value + "\n\n" + "no");
    } else if (value == "bdie"){
      a = (value + "\n\n" + "you shot me");
    } else if (value == "hello"){
      a = (value + "\n\n" + "hi");
    } else if (value == "hi"){
      a = (value + "\n\n" + "hello");
    } else if (value == "bye"){
      a =(value + "\n\n" + "no");
    } else if (value == "die"){
      a = (value + "\n\n" + "you shot me");
    }
}

 
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){  if (value == "ahello") {      a = (value + "\n\n" + "hi");  } else if (value == "ahi"){      a = (value + "\n\n" + "hello");    } else if (value == "abye"){      a = (value + "\n\n" + "no");    } else if (value == "adie"){      a = (value + "\n\n" + "you shot me");    } else if (value == "bhello"){      a = (value + "\n\n" + "hi");    } else if (value == "bhi"){      a = (value + "\n\n" + "hello");    } else if (value == "bbye"){      a = (value + "\n\n" + "no");    } else if (value == "bdie"){      a = (value + "\n\n" + "you shot me");    } else if (value == "hello"){      a = (value + "\n\n" + "hi");    } else if (value == "hi"){      a = (value + "\n\n" + "hello");    } else if (value == "bye"){      a =(value + "\n\n" + "no");    } else if (value == "die"){      a = (value + "\n\n" + "you shot me");    }}