将输入内容转换成带分隔符格式的激活码插件（JQ）

调用方式

$("#cdkey").formatCdkey({});

默认参数

{ 
separator:"-", //默认分隔符 
splitLength:4, //分割长度 
groupCount:5, //分隔符分隔的组数 
isSetCase:true, //是否转换大小写 
isToUpCase:true //true转换大写；false转换小写（isSetCase:true时生效） 
}

ps：separator仅支持单字符;

默认格式样例：F15A-D165-F168-94BF-A4T9

查看Demo

(function ($) {
    function containSpecial(s) {
        var containSpecial = RegExp(/[(\ )(\~)(\!)(\@)(\#)(\$)(\%)(\^)(\&)(\*)(\()(\))(\-)(\_)(\+)(\=)(\[)(\])(\{)(\})(\|)(\\)(\;)(\:)(\')(\")(\,)(\.)(\/)(\<)(\>)(\?)(\)]+/);
        return (containSpecial.test(s));
    };
$.fn.formatCdkey = function (options) {
    if (options.separator &amp;&amp; options.separator.length &gt; 1) {
        console.log("unsupport separator!");
        return;
    };
    var defaults = {
        separator : "-", //默认分隔符
        splitLength : 4, //分割长度
        groupCount : 5, //分隔符分隔的组数
        isSetCase : true, //是否转换大小写
        isToUpCase : true //转换大写
    };
    var opts = $.extend({}, defaults, options);
    var $this = $(this);
    var timeoutFlag;
    var maxLength = opts.splitLength * opts.groupCount + opts.groupCount - 1;
    $this.keyup(function (e) {
        clearTimeout(timeoutFlag);
        if (opts.isSetCase) {
            $this.val(opts.isToUpCase ? $this.val().toUpperCase() : $this.val().toLowerCase());
        }
        var fixVal = function () {
            var regPrefix = "";
            if (containSpecial(opts.separator)) {
                regPrefix = "\\";
            };
            var aval = $this.val().replace(new RegExp(regPrefix + opts.separator, "g"), "");
            if (aval.length &gt;= opts.splitLength) {
                var avalArray = aval.split("");
                var newVal = "";
                for (var i = 0; i &lt; avalArray.length; i++) {
                    if (i &gt; 0 &amp;&amp; (i + 1) % opts.splitLength == 0 &amp;&amp; newVal.length &lt;= maxLength) {
                        newVal += (avalArray[i] + opts.separator);
                    } else {
                        newVal += avalArray[i];
                    }
                }
                //截取最大长度约束的字符长度
                $this.val(newVal.substring(0, Math.min(newVal.length, maxLength)));
            };
        };
        if (e.keyCode == 8) { //删除键
            timeoutFlag = setTimeout(function (){
                fixVal();
            }, 2000);
            return;
        };
        fixVal();
    });
}

})(jQuery);

$(document).ready(function () {

$("#cdkey").formatCdkey({});

});