一些表单验证常用的正则表达式收集

//根据不同的验证内容，返回相应的正则表达式
function returnRegString(regName) {
    if (regName == "email") {
        return "^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$";  //邮箱
    } else if (regName == "tel") {
        return "^(86)?(-)?(0[0-9]{2,3})?(-)?([0-9]{7,8})(-)?([0-9]{3,5})?$";  //电话
    } else if (regName == "phone") {
        return "^(13[0-9]|15[0-9]|18[0-9])([0-9]{8})$";  //手机
    } else if (regName == "postcode") {
        return "^([0-9]{6})$";    //邮编
    } else if (regName == "number") {
        return "^(0|([1-9]+[0-9]*))(.[0-9]+)?$";   //数字
    } else if (regName == "decimal") {
        return "^[0-9]+([.][0-9]+)?$";    //浮点
    } else if (regName == "money") {
        return "^([0-9])$";    //货币
    } else if (regName == "website") {  //网址
        return "(http://|https://){0,1}[\w\/\.\?\&\=]+";
    } else if (regName == "fax") {  //传真
        return "^[+]{0,1}([0-9]){1,3}[ ]?([-]?(([0-9])|[ ]){1,12})+$";
    } else if (regName == "int") {   //整数
        return "^(-){0,1}\d+$";
    } else if (regName == "pInt") {   //正整数
        return "^\d+$";
    } else if (regName == "nInt") {  //负整数
        return "^-\d+$";
    } else if (regName == "nandl") {   //数字与字母
        return "[a-zA-Z0-9]";
    } else if (regName == "chinese") {   //是否含有中文字符
        return "[\u4e00-\u9fa5]";
    }
}