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Testing speed of a standard for loop vs. Array.indexOf.
var arr = ['aaa1', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhhh', 'aaaa', 'bbbb', 'cccc', 'dddd', 'eeee', 'ffff', 'gggg', 'hhh2'];
var forLoopIndexOf = function(array, item) {
if (array) {
for (var i = 0, j = array.length; i < j; i++)
if (array[i] === item)
return i;
}
return -1;
};
var conditionalIndexOf = (typeof Array.prototype.indexOf == "function") ? function(array, item) {
return Array.prototype.indexOf.call(array, item);
} : forLoopIndexOf;
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop |
| ready |
conditional indexOf |
| ready |
native indexof |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.