One day at a time

A lot of time when you do an AJAX call, you want to dynamic execute the javascript within the AJAX updated region. For example:

<div id="ajax_update_here">

<!-- this is ajax return result -->
<script>
alert("this is a dynamic message from the ajax backend");
</script>
<!-- end of ajax return result -->

</div>

http://kratcode.wordpress.com/tag/javascript/ is a description of how to do it. Just call: execJS(‘ajax_update_here’); and it will execute the javascript within the div block.

function execJS(node)
{
  var bSaf = (navigator.userAgent.indexOf('Safari') != -1);
  var bOpera = (navigator.userAgent.indexOf('Opera') != -1);
  var bMoz = (navigator.appName == 'Netscape');

  if (!node) return;

  /* IE wants it uppercase */
  var st = node.getElementsByTagName('SCRIPT');
  var strExec;

  for(var i=0;i<st.length; i++)
  {
    if (bSaf) {
      strExec = st[i].innerHTML;
      st[i].innerHTML = "";
    } else if (bOpera) {
      strExec = st[i].text;
      st[i].text = "";
    } else if (bMoz) {
      strExec = st[i].textContent;
      st[i].textContent = "";
    } else {
      strExec = st[i].text;
      st[i].text = "";
    }

    try {
      var x = document.createElement("script");
      x.type = "text/javascript";

      /* In IE we must use .text! */
      if ((bSaf) || (bOpera) || (bMoz))
        x.innerHTML = strExec;
      else x.text = strExec;

      document.getElementsByTagName("head")[0].appendChild(x);
    } catch(e) {
      alert(e);
    }
  }
};