Run results for: String to number, parseInt, +, or * 1

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.66 Mobile Safari/537.36

Browser: Chrome Mobile 119

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

stringVar * 1

37/s

+stringVar

32/s

parseInt

2/s

View exact numbers

Test name	Executions per second
✓ stringVar * 1	37 Ops/sec
+stringVar	32 Ops/sec
parseInt	2 Ops/sec

Script Preparation code:

var n = [
    "0",
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "10",
    "11",
    "12",
    "13",
    "14",
    "15",
    "16",
    "17",
    "18",
    "19",
    "20",
    "21",
    "22",
    "23",
    "24",
    "25",
    "26",
    "27",
    "28",
    "29",
    "30",
    "31",
    "32",
    "33",
    "34",
    "35",
    "36",
    "37",
    "38",
    "39",
    "40",
    "41",
    "42",
    "43",
    "44",
    "45",
    "46",
    "47",
    "48",
    "49",
    "50",
    "51",
    "52",
    "53",
    "54",
    "55",
    "56",
    "57",
    "58",
    "59",
    "60",
    "61",
    "62",
    "63",
    "64",
    "65",
    "66",
    "67",
    "68",
    "69",
    "70",
    "71",
    "72",
    "73",
    "74",
    "75",
    "76",
    "77",
    "78",
    "79",
    "80",
    "81",
    "82",
    "83",
    "84",
    "85",
    "86",
    "87",
    "88",
    "89",
    "90",
    "91",
    "92",
    "93",
    "94",
    "95",
    "96",
    "97",
    "98",
    "99",
];

Tests:

parseInt
let i = 0; while (i < 10000) { i++; n.map((s) => parseInt(s)); }
+stringVar
let i = 0; while (i < 10000) { i++; n.map((s) => +s); }
stringVar * 1
let i = 0; while (i < 10000) { i++; n.map((s) => s * 1); }

Run results for: String to number, parseInt, +, or * 1

Which method of casting a string to a number is fastest

parseInt

+stringVar

stringVar * 1