一个jquery&mvc中常用的序列化方法

刚开始工作的时候，需要把前台的复杂json对象（带嵌套）传递到后台c#的controller，用的此方法比较实用，当然在MVC4的apicontroller中貌似就用不到了，之后再总结吧。

function ToSerialize (obj) {
    var ransferCharForJavascript = function (s) {
        var newStr = s.replace(
        /[\x26\x27\x3C\x3E\x0D\x0A\x22\x2C\x5C\x00]/g,
        function (c) {
            ascii = c.charCodeAt(0)
            return '\\u00' + (ascii < 16 ? '0' + ascii.toString(16) : ascii.toString(16))
        }
         );
        return newStr;
    }
    if (obj == null) {
        return null
    }
    else if (obj.constructor == Array) {
        var builder = [];
        builder.push("[");
        for (var index in obj) {
            if (typeof obj[index] == "function") continue;
            if (index > 0) builder.push(",");
            builder.push(ToSerialize(obj[index]));
        }
        builder.push("]");
        return builder.join("");
    }
    else if (obj.constructor == Object) {
        var builder = [];
        builder.push("{");
        var index = 0;
        for (var key in obj) {
            if (typeof obj[key] == "function") continue;
            if (index > 0) builder.push(",");
            builder.push(FormatString("\"{0}\":{1}", key, ToSerialize(obj[key])));
            index++;
        }
        builder.push("}");
        return builder.join("");
    }
    else if (obj.constructor == Boolean) {
        return obj.toString();
    }
    else if (obj.constructor == Number) {
        return obj.toString();
    }
    else if (obj.constructor == String) {
        return FormatString('"{0}"', ransferCharForJavascript(obj));
    }
    else if (obj.constructor == Date) {
        return "'" + obj.formatDate("US", "") + "'"; //FormatString('{"__DataType":"Date","__thisue":{0}}', obj.getTime() - (new Date(1970, 0, 1, 0, 0, 0)).getTime());
    }
    else if (this.toString != undefined) {
        return ToSerialize(obj);
    }
}

function FormatString(str){
    var i = 1, args = arguments;
    var str = args[0];
    var re = /\{(\d+)\}/g;
    return str.replace(re, function () { return args[i++] });
}