Run results for: If statements vs zero multiplication and assignment

Is it faster to check if a numeric calculation needs to be performed and assigned to an object property, or just do the calculation against zero and assign it anyway.

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

If Statement - False

12.3M/s

Calculate - Positive

4.1M/s

Calculate - Zero

4.0M/s

If Statement - True

3.3M/s

View exact numbers

Test name	Executions per second
✓ If Statement - False	12,299,265 Ops/sec
Calculate - Positive	4,087,920 Ops/sec
Calculate - Zero	4,026,231 Ops/sec
If Statement - True	3,308,260 Ops/sec

Script Preparation code:

var DO_MATHS_TRUE = true,
    DO_MATHS_FALSE = false,
    DELTA = 12345,
    OBJ_SRC = {x: 12},
    OBJ_SRC_ZERO = {x: 0},
    OBJ_DEST = {x: 0};

Tests:

If Statement - True
if(DO_MATHS_TRUE){ OBJ_DEST.x += (OBJ_SRC.x * DELTA) }
If Statement - False
if(DO_MATHS_FALSE){ OBJ_DEST.x += (OBJ_SRC.x * DELTA) }
Calculate - Positive
OBJ_DEST.x += (OBJ_SRC.x * DELTA)
Calculate - Zero
OBJ_DEST.x += (OBJ_SRC_ZERO.x * DELTA)