jquery.ToJson.js（将hmtl元素包括其下子元素转换为Json对象）

/*******************************************
 @example
    var json = $(formSelector).toJson() ;
 ******************************************/

jQuery.fn.toJson = function(beforeExtend,afterExtend,params) {
	var me = jQuery(this) ;
	beforeExtend = beforeExtend||{} ;
	afterExtend = afterExtend||{} ;
	params = params||{} ;
	var a = {};
	
	//text hidden password
	me.find("input[type=text],input[type=hidden],input[type=password]").each( function(){
		_add(this.name||this.id,this.value) ;
	} ) ;
	me.find("textarea").each( function(){
		_add(this.name||this.id,this.value) ;
	} ) ;
	
	//radio
	me.find("input[type=radio]").filter(":checked").each( function(){
		_add(this.name||this.id,this.value) ;
	} ) ;
	
	//checkbox
	var temp_cb = "" ;
	me.find("input[type=checkbox]").filter(":checked").each( function(){
		if (temp_cb.indexOf(this.name ) == -1) {
			temp_cb += (this.name) + ",";
		}
	} ) ;
	jQuery( temp_cb.split(",") ).each( function(){
		var tempValue = [] ;
		jQuery("input[name='" + this + "']:checked").each(function(i) {
			tempValue.push( this.value ) ;
		});
		_add(this ,tempValue.join(",")) ;
	} ) ;
	
	//select
	me.find('select').each( function(){
		var multi = $(this).attr('multiple')  ;
		var val = [] ;
		jQuery(this).find('option:selected').each(function(){
			if(this.value)val.push( this.value ) ;
		});
		
		if( val.length == 0 ){
			val.push(this.value||"") ;
		}
		
		if(multi && params.mulSelectSplit ){
			_add(this.name||this.id,"'"+val.join("','")+"'") ;
		}else{
			_add(this.name||this.id,val.join(',')) ;
		}
	} ) ;
	
	return $.extend(beforeExtend , a , afterExtend) ;
	
	function _add(key,value){
		if(key == "__ValidatorRules") return ;
		
		if(!key || !jQuery.trim(key)) return ;
		
		value = value||'' ;
		a[key] = value ;
	}
}

jQuery.extend(
{
    /** 
    * @see   将javascript数据类型转换为json字符串 
    * @param 待转换对象,支持object,array,string,function,number,boolean,regexp 
    * @return 返回json字符串 
    */
    ChangedToJSON: function (object) {
        var type = typeof object;
        if ('object' == type) {
            if (Array == object.constructor)
                type = 'array';
            else if (RegExp == object.constructor)
                type = 'regexp';
            else
                type = 'object';
        }
        switch (type) {
            case 'undefined':
            case 'unknown':
                return;
                break;
            case 'function':
            case 'boolean':
            case 'regexp':
                return object.toString();
                break;
            case 'number':
                return isFinite(object) ? object.toString() : 'null';
                break;
            case 'string':
                return '"' + object.replace('/(//|/")/g', '"//$1"').replace('//n|/r|/t/g',
                function () {
                    var a = arguments[0];
                    return (a == '/n') ? '//n' :
                                  (a == '/r') ? '//r' :
                                  (a == '/t') ? '//t' : ""
                }) + '"';
                break;
            case 'object':
                if (object === null) return 'null';
                var results = [];
                for (var property in object) {
                    var value = jQuery.ChangedToJSON(object[property]);
                    if (value !== undefined)
                        results.push(jQuery.ChangedToJSON(property) + ':' + value);
                }
                return '{' + results.join(',') + '}';
                break;
            case 'array':
                var results = [];
                for (var i = 0; i < object.length; i++) {
                    var value = jQuery.ChangedToJSON(object[i]);
                    if (value !== undefined) results.push(value);
                }
                return '[' + results.join(',') + ']';
                break;
        }
    }
});