/// <reference path="../../../Themes/Jquery/jquery-1.11.0-vsdoc.js" />
/*
 * Function: Product Cas number judgment rule, and conversion
 * Time: 2016-3-8
 * Author: Li Jianfeng
 */
$.extend({
    /*
     * Function: Is the Cas number
     */
    isCas: function (str) {
        if (str) {
            var patter = /^(?:[0-9]{5,12}|[0-9]{2,9}-[0-9]{2}-[0-9])$/
            return patter.test(str);
        }
        return false;
    },
    convertToCas: function (str) {
        if ($.isCas(str)) {
            var patter = /^[0-9]{5,12}$/;
            if (patter.test(str))
            {
                var len = str.length;
                var last = str.substring(len - 1, len);
                var middle = str.substring(len - 3, len - 1);
                var first = str.substring(0, len - 3);
                return first + "-" + middle + "-" + last;
            }
            return str;
        }
        return null;
    },
    nullString:function(str)
    {
        if(!str)
        {
            return "无";
        }
        return str;
    }
});