title: How to delete Cookie before redirect to other page in javascript?
body: <p>I have this code to set up and check a cookie, and before a redirect (if the user click on the cancel button) I need to unset or delete the cookie.</p>
  
  <pre><code>function getCookie(c_name) {
      if (document.cookie.length &gt; 0) {
          c_start = document.cookie.indexOf(c_name + "=")
          if (c_start != -1) {
              c_start = c_start + c_name.length + 1
              c_end = document.cookie.indexOf(";", c_start)
              if (c_end == -1) c_end = document.cookie.length
              return unescape(document.cookie.substring(c_start, c_end))
          }
      }
      return "";
  }
  
  function setCookie(c_name, value, expiredays) {
      var exdate = new Date()
      exdate.setDate(exdate.getDate() + expiredays)
      document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : "; expires=" + exdate.toGMTString())
  }
  
  function checkCookie() {
      var todaysdate = new Date()
      var day = todaysdate.getDay()
  
      switch (day) {
      case 1:
          day = "Monday"
          break
      case 2:
          day = "Tuesday"
          break
      case 3:
          day = "Wednesday"
          break
      case 4:
          day = "Thursday"
          break
      case 5:
          day = "Friday"
          break
      case 6:
          day = "Saturday"
          break
      case 0:
          day = "Sunday"
          break
      }
  
      var thedate = getCookie('thedate')
  
      if (thedate != null &amp;&amp; thedate != "") {
          if (day == thedate) {} else {
              alert('')
          }
      } else {
          thedate = day
  
          if (thedate != null &amp;&amp; thedate != "") {
              setCookie('thedate', thedate, 365)
              // alert('dsadasdasdasdasdasdasd')
              var answer = confirm("Please click on OK to continue loading my page, or CANCEL to be directed to the Yahoo site.")
              if (!answer) {
  
                  window.location = "http://www.yahoo.com/";
              }
  
          }
      }
  }
  </code></pre>
  
  <p>How to unset the cookie <code>c_name</code>? </p>
  
  <p>I'm sure it's something easy, however I am not able to unset this cookie.</p>