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javascriptperformanceif-statementconditional-statementsmicro-optimization
Andrei Oniga
Andrei Oniga

Reputation: 8559

JavaScript: Is the `if / else` statement faster than the conditional statement in?

Consider the following two pieces of code:

var adj=0>grip.y?0<grip.x?0:-180:0<grip.x?-360:-180;

and

var adj;    
if (grip.y < 0) {   
    if (grip.x > 0)
        adj = 0;
    else
        adj = -180;
}
else {      
    if (grip.x > 0)
        adj = -360;
    else
        adj = -180;
}

They both produce the same result, but which is faster?

Upvotes: 0

Views: 1867

Answers (3)

Ganpat Kakar
Ganpat Kakar

Reputation: 163

Just to check the performance in JavaScript, I tried to do a small experiment.

console.time("ternary operator");
const val = (5 > 2) ? true : false;
console.timeEnd("ternary operator");

console.time("if condition");
let val2;
if (5 > 2) {
val2 = true;
} else {
val2 = false;
}
console.timeEnd("if condition");

and the output is quite shocking as the if condition is almost twice faster than the ternary statements.

Results :- enter image description here

So to conclude I would suggest using the if condition over the ternary operator.

Ok so here is multiple tries of similar operation

enter image description here

Upvotes: 0

Nevin
Nevin

Reputation: 3298

Use switch conditions,that is faster than if and other conditional statements.

Upvotes: 0

Rahul Tripathi
Rahul Tripathi

Reputation: 172398

The speed difference will be negligible - use whichever you find is more convinient and readable. There wont be any problem with the wrong conditional construct.

Upvotes: 2

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