Question

怎样将javascript转化为json数据

Answer 1

我举个例子给你，看看能不能对你有所帮助，若有帮助请采纳！

页面有个动态表格，在保存动态表格时，我们需要将其数据获取到，并在js中将其转换为json数据然后在送达给后台Action进行遍历后保存在相应的数据表中。

而你所问的问题，应该是如何在js中 将数据转换为json，请看下面代码：

var submitArrBefore = [];
        //根据表格ID获取表格的行数
        var beforeTable = document.getElementById("tabEvectionbefore");
        //减去表头
        var beforelen = (beforeTable.rows.length)-2;
        if (beforelen > 0) {
            //遍历行数据
            for(var i=1;i<=beforelen;i++){
                var beforeevectiontime= $("#beforeevectiontime_"+i).val();    
                var beforepeersite= $("#beforepeersite_"+i).val();       
                var beforevehicle = $("#beforevehicle_"+i).val(); 
                var beforeplatenumbers =$("#beforeplatenumbers_"+i).val(); 
                var beforestaymoney =$("#beforestaymoney_"+i).val(); 
                var jsonTmp = {};
                jsonTmp["evectiontime"] = beforeevectiontime;
                jsonTmp["peersite"] = beforepeersite;
                jsonTmp["vehicle"] = beforevehicle;
                jsonTmp["platenumbers"] = beforeplatenumbers;
                jsonTmp["staymoney"] = beforestaymoney;
                submitArrBefore.push(jsonTmp);//将数据push到数组中
            }
        }         
        //将数组转换为json数据
        var evectionPeerBefore = JSON.stringify(submitArrBefore);
       //为了方便传递到后台，于是声明了object容器来装。
        var object = new Object();
        object.evectionPeerBefore = evectionPeerBefore;

Answer 2

使用$.toJSON(Object)就可以转换了，转换之前先引入jquery.json.js
/*
* jQuery JSON Plugin
* version: 2.1 (2009-08-14)
*
* This document is licensed as free software under the terms of the
* MIT License: http://www.opensource.org/licenses/mit-license.php
*
* Brantley Harris wrote this plugin. It is based somewhat on the JSON.org
* website's http://www.json.org/json2.js, which proclaims:
* "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that
* I uphold.
*
* It is also influenced heavily by MochiKit's serializeJSON, which is
* copyrighted 2005 by Bob Ippolito.
*/

(function($) {
/** jQuery.toJSON( json-serializble )
Converts the given argument into a JSON respresentation.

If an object has a "toJSON" function, that will be used to get the representation.
Non-integer/string keys are skipped in the object, as are keys that point to a function.

json-serializble:
The *thing* to be converted.
**/
$.toJSON = function(o)
{
if (typeof(JSON) == 'object' && JSON.stringify)
return JSON.stringify(o);

var type = typeof(o);

if (o === null)
return "null";

if (type == "undefined")
return undefined;

if (type == "number" || type == "boolean")
return o + "";

if (type == "string")
return $.quoteString(o);