一些有用的javascript函数

    //得到真实数字,剔除前面有0的整数字符串
    function GetIntStr(str)
    {
        var flag = false;
        var slStr;
        var lNum;
       
        for(var i=0;i<str.length;i++)
        {
            slStr = str.substr(i,1);
            if("0" != slStr)
            {
                flag = true;
                lNum = i;
                break;
            }
        }
        return parseInt(str.substr(lNum,str.length-lNum));
    }


                    function isempty(obj)
                    {
                        //判断是否为空
                        var re=/^[　\s]*$/;
                        if(re.test(obj))
                        {
                         return true;
                        }
                        else
                        {
                         return false;
                        }
                    }