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- <!DOCTYPE html>
- <script>
- var start;
- var dom;
- function run() {
- if (dom) {
- dom.parentNode.removeChild(dom);
- }
- dom = document.createElement('div');
- var result = document.createElement('div');
- dom.appendChild(result);
- document.body.appendChild(dom);
- start = Date.now();
- for (var i = 0; i < 100; i++) {
- var iframe = document.createElement('iframe');
- iframe.style.width = '200px';
- iframe.style.height = '30px';
- dom.appendChild(iframe);
- var content = iframe.contentWindow.document.createTextNode('hello, world');
- iframe.contentWindow.document.body.appendChild(content);
- iframe.contentWindow.document.body.style.overflow = 'hidden';
- }
- result.innerHTML = 'Done! ' + (Date.now() - start) + ' ms';
- }
- </script>
- <input type="button" value="Go!" onclick="run()">
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