Run results for: Switch Case vs Object vs Array vs Map

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Browser: Chrome 91

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Switch Case	158015.5 Ops/sec
Object	245057.9 Ops/sec
Map	229772.9 Ops/sec
Array	202554.3 Ops/sec
Switch Case Indirect Value	72513.6 Ops/sec

Script Preparation code:

var obj = {
    0: () => console.log('Heavy task'),
    1: () => console.log('Heavy task'),
    2: () => console.log('Heavy task'),
    3: () => console.log('Heavy task'),
    4: () => console.log('Heavy task'),
    5: () => console.log('Heavy task'),
    6: () => console.log('Heavy task'),
    7: () => console.log('Heavy task'),
    8: () => console.log('Heavy task'),
    9: () => console.log('Heavy task'),
    10: () => console.log('Heavy task'),
    11: () => console.log('Heavy task'),
    12: () => console.log('Heavy task'),
    13: () => console.log('Heavy task'),
    14: () => console.log('Heavy task'),
    15: () => console.log('Heavy task'),
    16: () => console.log('Heavy task'),
    17: () => console.log('Heavy task'),
    18: () => console.log('Heavy task'),
    19: () => console.log('Heavy task'),
    20: () => console.log('Heavy task'),
    21: () => console.log('Heavy task'),
    22: () => console.log('Heavy task'),
    23: () => console.log('Heavy task'),
    24: () => console.log('Heavy task'),
    25: () => console.log('Heavy task'),
    26: () => console.log('Heavy task'),
    27: () => console.log('Heavy task'),
    28: () => console.log('Heavy task'),
    29: () => console.log('Heavy task'),
    30: () => console.log('Heavy task'),
    31: () => console.log('Heavy task'),
    32: () => console.log('Heavy task'),
    33: () => console.log('Heavy task'),
    34: () => console.log('Heavy task'),
    35: () => console.log('Heavy task'),
    36: () => console.log('Heavy task'),
    37: () => console.log('Heavy task'),
    38: () => console.log('Heavy task'),
    39: () => console.log('Heavy task'),
    40: () => console.log('Heavy task'),
    41: () => console.log('Heavy task'),
    42: () => console.log('Heavy task'),
    43: () => console.log('Heavy task'),
    44: () => console.log('Heavy task'),
    45: () => console.log('Heavy task'),
    46: () => console.log('Heavy task'),
    47: () => console.log('Heavy task'),
    48: () => console.log('Heavy task'),
    49: () => console.log('Heavy task'),
    50: () => console.log('Heavy task'),
    51: () => console.log('Heavy task'),
    52: () => console.log('Heavy task'),
    53: () => console.log('Heavy task'),
    54: () => console.log('Heavy task'),
    55: () => console.log('Heavy task'),
    56: () => console.log('Heavy task'),
    57: () => console.log('Heavy task'),
    58: () => console.log('Heavy task'),
    59: () => console.log('Heavy task'),
    60: () => console.log('Heavy task'),
    61: () => console.log('Heavy task'),
    62: () => console.log('Heavy task'),
    63: () => console.log('Heavy task'),
    64: () => console.log('Heavy task'),
    65: () => console.log('Heavy task'),
    66: () => console.log('Heavy task'),
    67: () => console.log('Heavy task'),
    68: () => console.log('Heavy task'),
    69: () => console.log('Heavy task'),
    70: () => console.log('Heavy task'),
    71: () => console.log('Heavy task'),
    72: () => console.log('Heavy task'),
    73: () => console.log('Heavy task'),
    74: () => console.log('Heavy task'),
    75: () => console.log('Heavy task'),
    76: () => console.log('Heavy task'),
    77: () => console.log('Heavy task'),
    78: () => console.log('Heavy task'),
    79: () => console.log('Heavy task'),
    80: () => console.log('Heavy task'),
    81: () => console.log('Heavy task'),
    82: () => console.log('Heavy task'),
    83: () => console.log('Heavy task'),
    84: () => console.log('Heavy task'),
    85: () => console.log('Heavy task'),
    86: () => console.log('Heavy task'),
    87: () => console.log('Heavy task'),
    88: () => console.log('Heavy task'),
    89: () => console.log('Heavy task'),
    90: () => console.log('Heavy task'),
    91: () => console.log('Heavy task'),
    92: () => console.log('Heavy task'),
    93: () => console.log('Heavy task'),
    94: () => console.log('Heavy task'),
    95: () => console.log('Heavy task'),
    96: () => console.log('Heavy task'),
    97: () => console.log('Heavy task'),
    98: () => console.log('Heavy task'),
    99: () => console.log('Heavy task'),
    100: () => console.log('Heavy task'),
};
var map = new Map([
    [0, () => console.log('Heavy task')],
    [1, () => console.log('Heavy task')],
    [2, () => console.log('Heavy task')],
    [3, () => console.log('Heavy task')],
    [4, () => console.log('Heavy task')],
    [5, () => console.log('Heavy task')],
    [6, () => console.log('Heavy task')],
    [7, () => console.log('Heavy task')],
    [8, () => console.log('Heavy task')],
    [9, () => console.log('Heavy task')],
    [10, () => console.log('Heavy task')],
    [11, () => console.log('Heavy task')],
    [12, () => console.log('Heavy task')],
    [13, () => console.log('Heavy task')],
    [14, () => console.log('Heavy task')],
    [15, () => console.log('Heavy task')],
    [16, () => console.log('Heavy task')],
    [17, () => console.log('Heavy task')],
    [18, () => console.log('Heavy task')],
    [19, () => console.log('Heavy task')],
    [20, () => console.log('Heavy task')],
    [21, () => console.log('Heavy task')],
    [22, () => console.log('Heavy task')],
    [23, () => console.log('Heavy task')],
    [24, () => console.log('Heavy task')],
    [25, () => console.log('Heavy task')],
    [26, () => console.log('Heavy task')],
    [27, () => console.log('Heavy task')],
    [28, () => console.log('Heavy task')],
    [29, () => console.log('Heavy task')],
    [30, () => console.log('Heavy task')],
    [31, () => console.log('Heavy task')],
    [32, () => console.log('Heavy task')],
    [33, () => console.log('Heavy task')],
    [34, () => console.log('Heavy task')],
    [35, () => console.log('Heavy task')],
    [36, () => console.log('Heavy task')],
    [37, () => console.log('Heavy task')],
    [38, () => console.log('Heavy task')],
    [39, () => console.log('Heavy task')],
    [40, () => console.log('Heavy task')],
    [41, () => console.log('Heavy task')],
    [42, () => console.log('Heavy task')],
    [43, () => console.log('Heavy task')],
    [44, () => console.log('Heavy task')],
    [45, () => console.log('Heavy task')],
    [46, () => console.log('Heavy task')],
    [47, () => console.log('Heavy task')],
    [48, () => console.log('Heavy task')],
    [49, () => console.log('Heavy task')],
    [50, () => console.log('Heavy task')],
    [51, () => console.log('Heavy task')],
    [52, () => console.log('Heavy task')],
    [53, () => console.log('Heavy task')],
    [54, () => console.log('Heavy task')],
    [55, () => console.log('Heavy task')],
    [56, () => console.log('Heavy task')],
    [57, () => console.log('Heavy task')],
    [58, () => console.log('Heavy task')],
    [59, () => console.log('Heavy task')],
    [60, () => console.log('Heavy task')],
    [61, () => console.log('Heavy task')],
    [62, () => console.log('Heavy task')],
    [63, () => console.log('Heavy task')],
    [64, () => console.log('Heavy task')],
    [65, () => console.log('Heavy task')],
    [66, () => console.log('Heavy task')],
    [67, () => console.log('Heavy task')],
    [68, () => console.log('Heavy task')],
    [69, () => console.log('Heavy task')],
    [70, () => console.log('Heavy task')],
    [71, () => console.log('Heavy task')],
    [72, () => console.log('Heavy task')],
    [73, () => console.log('Heavy task')],
    [74, () => console.log('Heavy task')],
    [75, () => console.log('Heavy task')],
    [76, () => console.log('Heavy task')],
    [77, () => console.log('Heavy task')],
    [78, () => console.log('Heavy task')],
    [79, () => console.log('Heavy task')],
    [80, () => console.log('Heavy task')],
    [81, () => console.log('Heavy task')],
    [82, () => console.log('Heavy task')],
    [83, () => console.log('Heavy task')],
    [84, () => console.log('Heavy task')],
    [85, () => console.log('Heavy task')],
    [86, () => console.log('Heavy task')],
    [87, () => console.log('Heavy task')],
    [88, () => console.log('Heavy task')],
    [89, () => console.log('Heavy task')],
    [90, () => console.log('Heavy task')],
    [91, () => console.log('Heavy task')],
    [92, () => console.log('Heavy task')],
    [93, () => console.log('Heavy task')],
    [94, () => console.log('Heavy task')],
    [95, () => console.log('Heavy task')],
    [96, () => console.log('Heavy task')],
    [97, () => console.log('Heavy task')],
    [98, () => console.log('Heavy task')],
    [99, () => console.log('Heavy task')],
    [100, () => console.log('Heavy task')],
]);
var arr = [];
for (var i = 0; i < 101; i++) {
  arr.push(() => console.log('Heavy task'));
}
var collection = {
   V0: 0,
   V1: 1,
   V2: 2,
   V3: 3,
   V4: 4,
   V5: 5,
   V6: 6,
   V7: 7,
   V8: 8,
   V9: 9,
   V10: 10,
   V11: 11,
   V12: 12,
   V13: 13,
   V14: 14,
   V15: 15,
   V16: 16,
   V17: 17,
   V18: 18,
   V19: 19,
   V20: 20,
   V21: 21,
   V22: 22,
   V23: 23,
   V24: 24,
   V25: 25,
   V26: 26,
   V27: 27,
   V28: 28,
   V29: 29,
   V30: 30,
   V31: 31,
   V32: 32,
   V33: 33,
   V34: 34,
   V35: 35,
   V36: 36,
   V37: 37,
   V38: 38,
   V39: 39,
   V40: 40,
   V41: 41,
   V42: 42,
   V43: 43,
   V44: 44,
   V45: 45,
   V46: 46,
   V47: 47,
   V48: 48,
   V49: 49,
   V50: 50,
   V51: 51,
   V52: 52,
   V53: 53,
   V54: 54,
   V55: 55,
   V56: 56,
   V57: 57,
   V58: 58,
   V59: 59,
   V60: 60,
   V61: 61,
   V62: 62,
   V63: 63,
   V64: 64,
   V65: 65,
   V66: 66,
   V67: 67,
   V68: 68,
   V69: 69,
   V70: 70,
   V71: 71,
   V72: 72,
   V73: 73,
   V74: 74,
   V75: 75,
   V76: 76,
   V77: 77,
   V78: 78,
   V79: 79,
   V80: 80,
   V81: 81,
   V82: 82,
   V83: 83,
   V84: 84,
   V85: 85,
   V86: 86,
   V87: 87,
   V88: 88,
   V89: 89,
   V90: 90,
   V91: 91,
   V92: 92,
   V93: 93,
   V94: 94,
   V95: 95,
   V96: 96,
   V97: 97,
   V98: 98,
   V99: 99,
   V100: 100,
};

Tests:

Switch Case
var value = Math.floor(Math.random() * 100); switch (value) { case 0: console.log('Heavy task'); break; case 1: console.log('Heavy task'); break; case 2: console.log('Heavy task'); break; case 3: console.log('Heavy task'); break; case 4: console.log('Heavy task'); break; case 5: console.log('Heavy task'); break; case 6: console.log('Heavy task'); break; case 7: console.log('Heavy task'); break; case 8: console.log('Heavy task'); break; case 9: console.log('Heavy task'); break; case 10: console.log('Heavy task'); break; case 11: console.log('Heavy task'); break; case 12: console.log('Heavy task'); break; case 13: console.log('Heavy task'); break; case 14: console.log('Heavy task'); break; case 15: console.log('Heavy task'); break; case 16: console.log('Heavy task'); break; case 17: console.log('Heavy task'); break; case 18: console.log('Heavy task'); break; case 19: console.log('Heavy task'); break; case 20: console.log('Heavy task'); break; case 21: console.log('Heavy task'); break; case 22: console.log('Heavy task'); break; case 23: console.log('Heavy task'); break; case 24: console.log('Heavy task'); break; case 25: console.log('Heavy task'); break; case 26: console.log('Heavy task'); break; case 27: console.log('Heavy task'); break; case 28: console.log('Heavy task'); break; case 29: console.log('Heavy task'); break; case 30: console.log('Heavy task'); break; case 31: console.log('Heavy task'); break; case 32: console.log('Heavy task'); break; case 33: console.log('Heavy task'); break; case 34: console.log('Heavy task'); break; case 35: console.log('Heavy task'); break; case 36: console.log('Heavy task'); break; case 37: console.log('Heavy task'); break; case 38: console.log('Heavy task'); break; case 39: console.log('Heavy task'); break; case 40: console.log('Heavy task'); break; case 41: console.log('Heavy task'); break; case 42: console.log('Heavy task'); break; case 43: console.log('Heavy task'); break; case 44: console.log('Heavy task'); break; case 45: console.log('Heavy task'); break; case 46: console.log('Heavy task'); break; case 47: console.log('Heavy task'); break; case 48: console.log('Heavy task'); break; case 49: console.log('Heavy task'); break; case 50: console.log('Heavy task'); break; case 51: console.log('Heavy task'); break; case 52: console.log('Heavy task'); break; case 53: console.log('Heavy task'); break; case 54: console.log('Heavy task'); break; case 55: console.log('Heavy task'); break; case 56: console.log('Heavy task'); break; case 57: console.log('Heavy task'); break; case 58: console.log('Heavy task'); break; case 59: console.log('Heavy task'); break; case 60: console.log('Heavy task'); break; case 61: console.log('Heavy task'); break; case 62: console.log('Heavy task'); break; case 63: console.log('Heavy task'); break; case 64: console.log('Heavy task'); break; case 65: console.log('Heavy task'); break; case 66: console.log('Heavy task'); break; case 67: console.log('Heavy task'); break; case 68: console.log('Heavy task'); break; case 69: console.log('Heavy task'); break; case 70: console.log('Heavy task'); break; case 71: console.log('Heavy task'); break; case 72: console.log('Heavy task'); break; case 73: console.log('Heavy task'); break; case 74: console.log('Heavy task'); break; case 75: console.log('Heavy task'); break; case 76: console.log('Heavy task'); break; case 77: console.log('Heavy task'); break; case 78: console.log('Heavy task'); break; case 79: console.log('Heavy task'); break; case 80: console.log('Heavy task'); break; case 81: console.log('Heavy task'); break; case 82: console.log('Heavy task'); break; case 83: console.log('Heavy task'); break; case 84: console.log('Heavy task'); break; case 85: console.log('Heavy task'); break; case 86: console.log('Heavy task'); break; case 87: console.log('Heavy task'); break; case 88: console.log('Heavy task'); break; case 89: console.log('Heavy task'); break; case 90: console.log('Heavy task'); break; case 91: console.log('Heavy task'); break; case 92: console.log('Heavy task'); break; case 93: console.log('Heavy task'); break; case 94: console.log('Heavy task'); break; case 95: console.log('Heavy task'); break; case 96: console.log('Heavy task'); break; case 97: console.log('Heavy task'); break; case 98: console.log('Heavy task'); break; case 99: console.log('Heavy task'); break; case 100: console.log('Heavy task'); break; }
Object
var value = Math.floor(Math.random() * 100); obj[value]();
Map
var value = Math.floor(Math.random() * 100); map.get(value)();
Array
var value = Math.floor(Math.random() * 100); arr[value]();
Switch Case Indirect Value
var value = Math.floor(Math.random() * 100); switch (value) { case collection.V0: console.log('Heavy task'); break; case collection.V1: console.log('Heavy task'); break; case collection.V2: console.log('Heavy task'); break; case collection.V3: console.log('Heavy task'); break; case collection.V4: console.log('Heavy task'); break; case collection.V5: console.log('Heavy task'); break; case collection.V6: console.log('Heavy task'); break; case collection.V7: console.log('Heavy task'); break; case collection.V8: console.log('Heavy task'); break; case collection.V9: console.log('Heavy task'); break; case collection.V10: console.log('Heavy task'); break; case collection.V11: console.log('Heavy task'); break; case collection.V12: console.log('Heavy task'); break; case collection.V13: console.log('Heavy task'); break; case collection.V14: console.log('Heavy task'); break; case collection.V15: console.log('Heavy task'); break; case collection.V16: console.log('Heavy task'); break; case collection.V17: console.log('Heavy task'); break; case collection.V18: console.log('Heavy task'); break; case collection.V19: console.log('Heavy task'); break; case collection.V20: console.log('Heavy task'); break; case collection.V21: console.log('Heavy task'); break; case collection.V22: console.log('Heavy task'); break; case collection.V23: console.log('Heavy task'); break; case collection.V24: console.log('Heavy task'); break; case collection.V25: console.log('Heavy task'); break; case collection.V26: console.log('Heavy task'); break; case collection.V27: console.log('Heavy task'); break; case collection.V28: console.log('Heavy task'); break; case collection.V29: console.log('Heavy task'); break; case collection.V30: console.log('Heavy task'); break; case collection.V31: console.log('Heavy task'); break; case collection.V32: console.log('Heavy task'); break; case collection.V33: console.log('Heavy task'); break; case collection.V34: console.log('Heavy task'); break; case collection.V35: console.log('Heavy task'); break; case collection.V36: console.log('Heavy task'); break; case collection.V37: console.log('Heavy task'); break; case collection.V38: console.log('Heavy task'); break; case collection.V39: console.log('Heavy task'); break; case collection.V40: console.log('Heavy task'); break; case collection.V41: console.log('Heavy task'); break; case collection.V42: console.log('Heavy task'); break; case collection.V43: console.log('Heavy task'); break; case collection.V44: console.log('Heavy task'); break; case collection.V45: console.log('Heavy task'); break; case collection.V46: console.log('Heavy task'); break; case collection.V47: console.log('Heavy task'); break; case collection.V48: console.log('Heavy task'); break; case collection.V49: console.log('Heavy task'); break; case collection.V50: console.log('Heavy task'); break; case collection.V51: console.log('Heavy task'); break; case collection.V52: console.log('Heavy task'); break; case collection.V53: console.log('Heavy task'); break; case collection.V54: console.log('Heavy task'); break; case collection.V55: console.log('Heavy task'); break; case collection.V56: console.log('Heavy task'); break; case collection.V57: console.log('Heavy task'); break; case collection.V58: console.log('Heavy task'); break; case collection.V59: console.log('Heavy task'); break; case collection.V60: console.log('Heavy task'); break; case collection.V61: console.log('Heavy task'); break; case collection.V62: console.log('Heavy task'); break; case collection.V63: console.log('Heavy task'); break; case collection.V64: console.log('Heavy task'); break; case collection.V65: console.log('Heavy task'); break; case collection.V66: console.log('Heavy task'); break; case collection.V67: console.log('Heavy task'); break; case collection.V68: console.log('Heavy task'); break; case collection.V69: console.log('Heavy task'); break; case collection.V70: console.log('Heavy task'); break; case collection.V71: console.log('Heavy task'); break; case collection.V72: console.log('Heavy task'); break; case collection.V73: console.log('Heavy task'); break; case collection.V74: console.log('Heavy task'); break; case collection.V75: console.log('Heavy task'); break; case collection.V76: console.log('Heavy task'); break; case collection.V77: console.log('Heavy task'); break; case collection.V78: console.log('Heavy task'); break; case collection.V79: console.log('Heavy task'); break; case collection.V80: console.log('Heavy task'); break; case collection.V81: console.log('Heavy task'); break; case collection.V82: console.log('Heavy task'); break; case collection.V83: console.log('Heavy task'); break; case collection.V84: console.log('Heavy task'); break; case collection.V85: console.log('Heavy task'); break; case collection.V86: console.log('Heavy task'); break; case collection.V87: console.log('Heavy task'); break; case collection.V88: console.log('Heavy task'); break; case collection.V89: console.log('Heavy task'); break; case collection.V90: console.log('Heavy task'); break; case collection.V91: console.log('Heavy task'); break; case collection.V92: console.log('Heavy task'); break; case collection.V93: console.log('Heavy task'); break; case collection.V94: console.log('Heavy task'); break; case collection.V95: console.log('Heavy task'); break; case collection.V96: console.log('Heavy task'); break; case collection.V97: console.log('Heavy task'); break; case collection.V98: console.log('Heavy task'); break; case collection.V99: console.log('Heavy task'); break; case collection.V100: console.log('Heavy task'); break; }

Run results for: Switch Case vs Object vs Array vs Map

Switch Case

Object

Map

Array

Switch Case Indirect Value