如何获取从中调用javascript函数的html链接的父div的类名？

Question

How can I get the class name of the parent div from which a html link calls a javascript function?

In the following code example:

<div class="parent-class">
  <a href="javascript:parent(this.parent)">Find parent</a>
</div>

<script>
  function parent(parent) {
    var theValueImLookingFor = (parent.className);
  }
</script>

I would like the "theValueImLookingFor" to be "parent-class", but I keep getting "undefined".

I been trying to figure this out for almost an hour, what can I change to make this work? I understand there are more static ways to get this information, but for my specific purpose I really need to identify the div through the javascript function from which it is called.

Answer 1

You've tagged this with jQuery, which will be the easiest way to find the details of the parent div. Something like

<div class="parent-div">
    <a id="link">Find Parent</a>
</div>

<script>
    $('#link').click(function() {
        alert($(this).parent().attr('class'));
    });
</script>

Answer 2

I would avoid using JavaScript as an href value, and do something like this:

var pre = onload;
onload = function(){
if(pre)pre();

var doc = document;
function getParentClassName(childNode){
  return childNode.parentNode.className;
}
console.log(getParentClassName(doc.getElementsByTagName('a')[0]));

}