textarea-dom.html | Explore in Territory

<!DOCTYPE html>
<body>
<style>
textarea:valid {
    background-color: lime;
}
textarea:invalid {
    background-color: red;
}
</style>
<script src="../resources/runner.js"></script>
<textarea maxlength=2147483647 id="container"></textarea>
<script>
var container = document.getElementById('container');
var nodes = [];
var childCount = 1000;
// Vary the text nodes added, avoiding secondary effects of using identical strings and allocation reuse.
for (var i = 0; i < childCount; ++i)
    nodes.push(document.createTextNode('A quick brown fox jumps over the ' + i + 'th lazy dog.\n'));

PerfTestRunner.measureRunsPerSecond({
    description: "Measures performance of adding text nodes to a textarea, then clearing it.",
    run: function() {
        for (var i = 0; i < childCount; ++i)
            container.appendChild(nodes[i]);
        container.innerHTML = '';
    }
});
</script>
</body>

chromium/third_party/blink/perf_tests/editing/textarea-dom.html