removing html element styles via javascript

Question

Hello all, I'm trying to replace an element's inline style tag value. The current element looks like this:

`<tr class="row-even" style="background: red none repeat scroll 0% 0%; position: relative; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" id="0000ph2009-06-10s1s02">`

and I'd like to remove all that style stuff so that it's styled by it's class rather than it's inline style. I've tried delete element.style; and element.style = null; and element.style = ""; to no avail. My current code breaks at these statement. The whole function looks like:
function unSetHighlight(index){

if(index < 10)
index = "000" + (index);
else if (index < 100)
  index = "000" + (index);
  else if(index < 1000)
    index = "0" + (index);
    if(index >= 1000)
      index = index;

var mainElm = document.getElementById('active_playlist');
var elmIndex = "";

for(var currElm = mainElm.firstChild; currElm !== null; currElm = currElm.nextSibling){
  if(currElm.nodeType === 1){

  var elementId = currElm.getAttribute("id");

  if(elementId.match(/\b\d{4}/)){

    elmIndex = elementId.substr(0,4);


    if(elmIndex == index){
      var that = currElm;
      //that.style.background = position: relative;
      }
    }
  }
}

clearInterval(highlight);
alert("cleared Interval");
that.style.background = null;

alert("unSet highlight called");
}

the clearInterval works but the alert never fires and the background stays the same. Anyone see any problems? Thanks in advance...

Answer 1

you can just do: element.removeAttribute("style")

Answer 2

getElementById("id").removeAttribute("style");

if you are using jQuery then

$("#id").removeClass("classname");

Answer 3

The class attribute can contain multiple styles, so you could specify it as

<tr class="row-even highlight">

and do string manipulation to remove 'highlight' from element.className

element.className=element.className.replace('hightlight','');

---

Using jQuery would make this simpler as you have the methods

$("#id").addClass("highlight");
$("#id").removeClass("hightlight");

that would enable you to toggle highlighting easily

Answer 4

function unSetHighlight(index){
alert(index);
if(index < 10)
index = "000" + (index);
else if (index < 100)
index = "000" + (index);
else if(index < 1000)
index = "0" + (index);
if(index >= 1000)
index = index;

var mainElm = document.getElementById('active_playlist');
var elmIndex = "";

for(var currElm = mainElm.firstChild; currElm !== null; currElm = currElm.nextSibling){
  if(currElm.nodeType === 1){

  var elementId = currElm.getAttribute("id");

  if(elementId.match(/\b\d{4}/)){

    elmIndex = elementId.substr(0,4);
    alert("elmIndex = " + elmIndex + "index = " + index);


    if(elmIndex === index){
      var that = currElm;
      alert("match found");
      }
    }
  }
}




clearInterval(highlight);
alert("cleared Interval");
that.removeAttribute("style");


//that.style.position = "relative";
//reColor();
alert("unSet highlight called");
}

Answer 5

Finally got it working. I was suppling the function with the improper index (1 after what I was looking for, doh!)