Adding set of <TR> onto a table from DOM via javascript and AJAX

I am a beginner with javascript ajax, and all this web stuff.

I have a situation, similar to what was posted (and seemingly solved) in How to insert a a set of table rows after a row in pure JS

In my case, I have xmlhttp.responseText returning a set of TRs from an AJAX call. I need to add it to the end of a table on the page it is called from.

I was using document.getElementById("posts").innerHTML+=xmlhttp.responseText; It worked well on all except IE, and having read into it, I think 开发者_如何学GoI understand why (read this).

In your code snippet

function appendRows(node, html){  
    var temp = document.createElement("div"); 
    var tbody = node.parentNode; 
    var nextSib = node.nextSibling; 

    temp.innerHTML = "<table><tbody>"+html; 
    var rows = temp.firstChild.firstChild.childNodes; 

    while(rows.length){ 
        tbody.insertBefore(rows[i], nextSib); 
    } 
} 

What does node mean? I am trying to find where I can get that in my code.

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node appears to be the TR that the other table rows will be inserted after.