Run results for: instanceof vs typeof vs Object.prototype.toString.call

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0

Browser: Firefox 140

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Object.prototype.toString.call ===

1562.6M/s

Object.prototype.toString.call ==

1449.3M/s

typeof

1285.6M/s

typeof no function

1106.8M/s

instanceof

122.0M/s

View exact numbers

Test name	Executions per second
✓ Object.prototype.toString.call ===	1,562,626,688 Ops/sec
Object.prototype.toString.call ==	1,449,307,776 Ops/sec
typeof	1,285,562,240 Ops/sec
typeof no function	1,106,768,384 Ops/sec
instanceof	121,985,584 Ops/sec

Script Preparation code:

var obj = {a:2};

Tests:

instanceof
obj instanceof Object
typeof
typeof obj === 'object'
typeof no function
typeof obj === 'object' && typeof obj !== 'function'
Object.prototype.toString.call ==
"[object Object]" == Object.prototype.toString.call(obj)
Object.prototype.toString.call ===
"[object Object]" === Object.prototype.toString.call(obj)