create html with text and run scripts code example
Example: execute js with innerhtml
<html>
<head>
<script>
function executer_script(monscript) {
var head = document.getElementsByTagName("head")[0];
var scr;
var d = document.getElementById('resultat');
d.innerHTML = monscript;
var scrajx = d.getElementsByTagName('script');
for(var i in scrajx) {
scr = document.createElement("script");
scr.type = "text/javascript";
scr.text = scrajx[i].text;
head.appendChild(scr);
}
}
</script>
</head>
<body>
<input type="button" value="test" onclick="executer_script('Mon html + du javascript <script>alert(\'test\');</script>');">
<div id="resultat"></div>
</body>
</html>