无闪烁更新网页内容JS实现_javascript技巧

var str2DOMElement = function(html) {
var frame = document.createElement('iframe');
frame.style.display = 'none';
document.body.appendChild(frame);
frame.contentDocument.open();
frame.contentDocument.write(html);
frame.contentDocument.close();
var el = frame.contentDocument.body.firstChild;
document.body.removeChild(frame);
return el;
}
var markup = '';
var el = str2DOMElement(markup);