javascript获取删除cookie代码实例

<script>
function GetCookieValue(name){
  var cookieValue=null;
  if(document.cookie&&document.cookie!=''){
    var cookies=document.cookie.split(';');
    for(var index=0;index<cookies.length;index++){
      var cookie=jQuery.trim(cookies[index]);
      if(cookie.substring(0,name.length+1)==(name+'=')){
        cookieValue=decodeURIComponent(cookie.substring(name.length+1));
        break;
      }
    }
  }
  return cookieValue;
}
function DelCookie(name){
  var exp=new Date();
  exp.setTime(exp.getTime()+(-1 * 24 * 60 * 60 * 1000));
  var cval=GetCookieValue(name);
  document.cookie=name+"=" + cval + "; expires=" + exp.toGMTString();
}
</script>