FOR loop performance in Javascript
- by AndrewMcLagan
As my research leads me to believe that for loops are the fastest iteration construct in javascript language. I was thinking that also declaring a conditional length value for the for loop would be faster... to make it clearer, which of the following do you think would be faster?
Example ONE
for(var i = 0; i < myLargeArray.length; i++ ) {
console.log(myLargeArray[i]);
}
Example TWO
var count = myLargeArray.length;
for(var i = 0; i < count; i++ ) {
console.log(myLargeArray[i]);
}
my logic follows that on each iteration in example one accessing the length of myLargeArray on each iteration is more computationally expensive then accessing a simple integer value as in example two?
