Array indexOf
JavaScript performance comparison
Test case created
Preparation code
<script>
Benchmark.prototype.setup = function() {
var array = [];
for (var i = 0; i < 10000; i++) {
array[i] = 2 * i;
}
};
</script>
Test runner
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Testing in unknown unknown
| Test |
Ops/sec |
Array loop |
var found1 = false, found2 = false;
for (var i = 0; i < array.length; i++) {
if (array[i] == 100) {
found1 = i;
break;
}
}
for (var i = 0; i < array.length; i++) {
if (array[i] == 101) {
found2 = i;
break;
}
}
|
pending… |
indexOf |
var found1 = array.indexOf(100);
var found2 = array.indexOf(101);
|
pending… |
for in |
var found1 = false, found2 = false;
for (var i in array) {
if (array[i] == 100) {
found1 = i;
break;
}
}
for (var i in array) {
if (array[i] == 101) {
found2 = i;
break;
}
}
|
pending… |
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