PerformanceTests/Bindings/insert-before.html

<!DOCTYPE html>
<html>
<body>
<script src="../resources/runner.js"></script>
<script>
var div = document.createElement("div");
var childDiv = document.createElement("div");

PerfTestRunner.measureRunsPerSecond({
    description: "This benchmark covers 'insertBefore' in Dromaeo/dom-modify.html and replaceChild()",
    setup: function() {
        div.innerHTML = "";
        div.appendChild(childDiv);
    },
    run: function() {
        var localDiv = div;
        var localFirstChildOfDiv = div.firstChild;
        var localChildDiv = childDiv;
        for (var i = 0; i < 50000; i++)
            localDiv.insertBefore(localChildDiv, localFirstChildOfDiv);
}});
</script>
</body>
</html>