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.

Go to the benchmark

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser: Firefox 127

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
If Statement - True	131041256.0 Ops/sec
If Statement - False	450608416.0 Ops/sec
Calculate - Positive	143557504.0 Ops/sec
Calculate - Zero	131886624.0 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)

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.

If Statement - True

If Statement - False

Calculate - Positive

Calculate - Zero