Javascript Value Manipulation In Hidden Field

I want a particular set of values splitted by "^" deleted from a hidden field I am putting value in hidden fields. Now I want particular values set deleted, i.e.

HIDDEN FIELD VALUE = 1|1|1|1^2|2|2|2^3|3|3|3

DROP DOWN=

INDEX |VALUE | TEXT

0 | 1 |1

1 | 2 |2

2 | 3 |3

WANT TO DELETE = ^2|2|2|2 WITH DROPDOWN VALUE 2;

Here is my code showing how I put values in the hidden field

function putinactions()
{

    var hiddenfield = document.getElementById("hdfActions");
    var ActList= document.getElementById("Actionlist");

     var attdt= document.getElementById("txtAttOn");
     var depen= document.getElementById("ddlDepend");
     var tattby= document.getElementById("txtAttendedBy");
     var dattby= document.getElementById("ddlAttendedBy");
     var dpriority= document.getElementById("ddlPriority");
     var taction= document.getElementById("txtAction");
     var dstatus= document.getElementById("ddlStatus");
     var tacdt= document.getElementById("txtACDt");
    if(depen.value==9)
    {
       tattby.value = "0";
    }

      if(depen.value!=9)
    {
       dattby.value = "0";
    }

    if(hiddenfield.value=="")
        {
            hiddenfield.value=
                        attdt.value+"|"+ 
                        depen.value+"|"+
                        tattby.value+"|"+
                        dattby.value+"|"+
                        dpriority.value+"|"+开发者_如何学Python
                        taction.value+"|"+
                       dstatus.value+"|"+
                       tacdt.value;
        }

   else
           {

            hiddenfield.value=hiddenfield.value+"^"+
                        attdt.value+"|"+ 
                        depen.value+"|"+
                        tattby.value+"|"+
                        dattby.value+"|"+
                        dpriority.value+"|"+
                        taction.value+"|"+
                       dstatus.value+"|"+
                       tacdt.value;
           }

            var optn = document.createElement("OPTION"); 
            optn.text=attdt.value+"~~"+taction.value.substring(0,20)+"...";
            optn.value=taction.value;
            ActList.options.add(optn);
        attdt.value="";
        depen.value="";

          taction.value="";
          tacdt.value="";
}

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If you are interested in removing the values enclosed by ^ characters, you can simply use a regular expression.