javascript函数总结

//是否是货币格式##.##的形式
function IsCurrencyData(s){
     var reg=/^\d*\.?\d{0,2}$/;
     var result= reg.exec(s);
     if(!result)
        return false;
     return true;
}
//精确一个数据data到小数点第index位
function ToFixed(data,index){
    var num = new Number(data);
     var ret=num.toFixed(index);
    return ret;
}
//(jquery) 获取一组互斥单选框组选中的值
function GetCheckedRadiosValue(name){
    var value = $("input:radio[name='"+name+"'][checked]").val();
    return value;
}
//设置一个cookie的值
 function SetCookie(name,value,expiredays)
{
    var exdate=new Date();
    exdate.setDate(exdate.getDate()+expiredays)
    document.cookie=name+ "=" +escape(value)+
    ((expiredays==null) ? "" : ";path=/;expires="+exdate.toGMTString());
}
//获取一个cookie的值
function GetCookiesValue(name)
{
    if (document.cookie.length>0)
      {
          var c_start=document.cookie.indexOf(name + "=")
          if (c_start!=-1)
          {
            c_start=c_start + 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 DoubleLinkedList(){
    function Node(){
        this.Value;
        this.Next;
        this.Pre;
    }
    this.Head=new Node();
    this.Head.Next=null;
    this.Head.Pre=null;
    this.Count=0;
    this.CurrentNode=this.Head;
    this.PNode=this.Head;
    this.Add=function(v){
            var nNode=new Node();
            nNode.Value=v;
            nNode.Next=null;
            nNode.Pre=this.CurrentNode;
            this.CurrentNode.Next=nNode;
            this.CurrentNode=nNode;
            this.Count++;
    }
    this.IsEmpty=function(){
        return this.Count>0;
    }
    this.GoNext=function(){
        if(this.PNode.Next!=null){
            this.PNode=this.PNode.Next;
            return this.PNode;
        }else{
            this.PNode=this.Head;
            return null;
        }
    }
    this.IsGoToEnd=function(){
        return this.PNode.Next==null;
    }
    this.GoPre=function(){
        if(this.PNode.Pre!=null){
            this.PNode=this.PNode.Pre;
            return this.PNode;
        }
        else{
            this.PNode=this.Head;
            return null;
        }
    }
    this.Remove=function(v){
        var node;
           while((node=list.GoNext())!=null){
               if(node.Value==v){
                   node.Pre.Next=node.Next;
                   node.Next.Pre=node.Pre;
                   node=null;
                   this.Count--;
                   this.PNode=this.Head;
                   break;
               }
           }
    }
}