replace &amp to & , <lt to < and >gt to gt in javascript

Question

I want to replace &amp to & using javascript. Here is the sample code of mine.EmployeeCode could contain &. The EmployeeCode is selected from Datagrid and its showed in "txtEmployeeCode" textbox. But if the EmployeeCode contains any & then it shows &amp into the textbox. How could &amp be removed from EmployeeCode? can anyone help...

function closewin(EmployeeCode) {
     opener.document.Form1.txtEmployeeCode.value = EmployeeCode;
     this.close();
}

Answer 1

With this:

function unEntity(str){
   return str.replace(/&amp;/g, "&").replace(/&lt;/g, "<").replace(/&gt;/g, ">");
}

function closewin(EmployeeCode) {
     opener.document.Form1.txtEmployeeCode.value = unEntity(EmployeeCode);
     this.close();
}

OPTIONAL If you are using jQuery, this will decode any html entity (not only & < and >):

function unEntity(str){
   return $("<textarea></textarea>").html(str).text();
}

Cheers