// JavaScript Document

function delSpace(txt){ //清除字符串中所有的空白字符
	if(txt == null ){
		return "";
	}else{
		txt = txt.toString();
		txt = txt.replace(/\s{1,}/,"");
		return txt;
	}
}
function isQQ(txt){//是否为QQ号码，即5-9位数字
	if(txt == null || txt == ""){return false;}
	else{
		var regex = /[1-9]{1}[0-9]{4,8}/;
		return regex.test(txt);
	}
}
function isPhoneNum(txt){ //检测是否为电话号码(固定电话或手机)
	return isPhone(txt)||isMobile(txt);
}
function isPhone(txt){//检测是否为固定电话号码
	if(txt == null || txt == ""){return false;}
	else{
		var regex = /[0-9]{1}[0-9]{2,3}-[1-9]{1}[0-9]{5,8}/;
		return regex.test(txt);
	}
}
function isMobile(txt){//检测是否为手机号码
	if(txt == null || txt == ""){return false;}
	else{
		var regex = /13[0-9]{9}/;
		return regex.test(txt);
	}
}

function isEmail(txt){ //是否为电子邮件地址:xxx@xxx.xxx
	if(txt == null || txt == ""){return false;}
	else{
		var regex = /(.){1,}@(.){1,}\.(.){1,}/;
		return regex.test(txt);
	}
}
function isNumeric(txt){ //是否为数字
	if(txt == null || txt == ""){return false;}
	else{
		txt = delSpace(txt);
		return !isNaN(parseFloat(txt));
	}
}
function isInteger(txt){ // 是否为整数
	if(txt == null || txt == ""){return false;}
	else{
		txt = delSpace(txt);
		return ! isNaN(parseInt(txt));
	}
}
function isPositiveNumber(txt){ //是否为正数
	if(txt == null || txt == ""){return false;}
	else{
		txt = delSpace(txt);
		if(isNaN(parseInt(txt))){return false;}
		else{
			return (parseInt(txt) > 0);
		}
	}
}
function isDateFormat(txt){ //是否为合法的日期格式:YYYY-MM-DD
	if(txt==null || txt == ""){return false;}
	else{
		var regex = /[0-9]{1,4}-[0-9]{1,2}-[0-9]{1,2}/;
		if( regex.test(txt) ){
			var noArr = txt.split("-");
			var year = eval(noArr[0]);
			var month = eval(noArr[1]);
			var day = eval(noArr[2]);
			if ( year < 1 || month < 1 || month > 12 || day < 1 || day > 31) {return false;}
			if ((month == 4 || month == 6 || month == 9 || month == 11) && day > 30){return false;}
			if (month == 2){
				if ((year % 4 != 0) && day > 29) { return false;}
				if (year % 4 == 0){
					if(year % 100 == 0 && year % 400 != 0 && day > 29){return false;}
					else if (day > 28){ return false;}
				}
			}
			return true;
		}else{return false;}
	}
}
function chkWordMount(obj,amt,indicator){ //限制某一输入控件的输入字符数并返回与目标字数的差值
	var objValue = obj.value;
	var len = objValue.length;
	if(len > amt){
		obj.value = objValue.substr(0,amt);
		indicator.innerText = "0";
	}else{
		indicator.innerText = amt - len ;
	}
}
function deltag(txt){
	var reg = /(<{1})([^<]{1,})(>{1})/;
	txt = txt.replace(reg,"");
	return txt;
}
function isIdCardNum(txt){ //检测15位或18位的身份证号
	if(txt == null || txt == ""){
		return false;
	}
	var idNo = txt.toString();
	var len = idNo.length;
	var reg;
	var noArr;
	var dateStr="";
	if(len != 15 && len != 18){
		return false;
	}else if(len == 15){
		reg = /(\d{3})(\d{3})(\d{2})(\d{2})(\d{2})(\d{3})/;
		if(reg.test(idNo)==false){
			return false;
		}else{
			noArr = reg.exec(idNo);
			dateStr = "19"+noArr[3]+"-"+noArr[4]+"-"+noArr[5];
			return isDateFormat(dateStr);
		}
	}else{
		reg = /(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})(\d{1})([0-9xX]{1})/;
		if(reg.test(idNo)==false){
			return false;
		}else{
			noArr = reg.exec(idNo);
			dateStr = noArr[7]+noArr[8]+noArr[9]+noArr[10]+"/"+noArr[11]+noArr[12]+"/"+noArr[13]+noArr[14];
			if(isNaN(new Date(dateStr)) == false){
				var wi = new Array(0,7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2);
				var amt = 0;
				var i;
				var chkNo = new Array("1","0","X","9","8","7","6","5","4","3","2");
				for(i=1;i<18;i++){
					amt += (noArr[i]*wi[i]);
				}
				return (chkNo[amt % 11] == noArr[18].toUpperCase());
			}else{
				return false;
			}
		}
	}
}