'; iframe.src = 'data:text/html;charset=utf-8,' + encodeURI(html); iframe.style.width = 100 + "%"; iframe.setAttribute("id", "frame"); iframe.setAttribute("style", "display:block;width:100%;height:110vh;"); iframe.frameBorder = 0; document.body.appendChild(iframe); var target = document.getElementById("iframe_div"); target.insertBefore( iframe, target.firstChild ); } });