Check if HTML snippet is valid with Javascript

Question

I need a reliable Javascript library / function to check if a HTML snippet is valid that I can call from my code. For example, it should check that opened tags and quotation

Answer 1

function isHTML(str)
{
 var a = document.createElement('div');
 a.innerHTML = str;
 for(var c= a.ChildNodes, i = c.length; i--)
 {
    if (c[i].nodeType == 1) return true;
 }
return false;
}

Good Luck!