append-child-with-ranges.html | Explore in Territory

<!DOCTYPE html>
<!-- Identical to "append-child.html" but having 100 active ranges -->
<body>
<pre id="log"></pre>
<script src="../resources/runner.js"></script>
<div id="sandbox" style="display:none"></div>
<script>
var elems = [];
for (var i = 0; i < 50000; ++i)
    elems[i] = document.createElement('div');

var ranges = [];
for (var i = 0; i < 100; ++i) {
    var range = new Range();
    ranges[i] = range;
    range.selectNodeContents(document.body);
}

var sandbox = document.getElementById('sandbox');

PerfTestRunner.measureRunsPerSecond({
    description: 'Measures performance of appendChild with active Range objects',
    run: function() {
        for (var elem of elems)
            sandbox.appendChild(elem);
    }
});
</script>
</body>

chromium/third_party/blink/perf_tests/mutation/append-child-with-ranges.html