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)
if (type == 'object')
{
if (typeof o.toJSON == "function")
return $.toJSON( o.toJSON() )
if (o.constructor === Date)
{
var month = o.getUTCMonth() + 1
if (month <10) month = '0' + month
var day = o.getUTCDate()
if (day <10) day = '0' + day
var year = o.getUTCFullYear()
var hours = o.getUTCHours()
if (hours <10) hours = '0' + hours
var minutes = o.getUTCMinutes()
if (minutes <10) minutes = '0' + minutes
var seconds = o.getUTCSeconds()
if (seconds <10) seconds = '0' + seconds
var milli = o.getUTCMilliseconds()
if (milli <100) milli = '0' + milli
if (milli <10) milli = '0' + milli
return '"' + year + '-' + month + '-' + day + 'T' +
hours + ':' + minutes + ':' + seconds +
'.' + milli + 'Z"'
}
if (o.constructor === Array)
{
var ret = []
for (var i = 0i <o.lengthi++)
ret.push( $.toJSON(o[i]) || "null" )
return "[" + ret.join(",") + "]"
}
var pairs = []
for (var k in o) {
var name
var type = typeof k
if (type == "number")
name = '"' + k + '"'
else if (type == "string")
name = $.quoteString(k)
else
continue //skip non-string or number keys
if (typeof o[k] == "function")
continue //skip pairs where the value is a function.
var val = $.toJSON(o[k])
pairs.push(name + ":" + val)
}
return "{" + pairs.join(", ") + "}"
}
}
/** jQuery.evalJSON(src)
Evaluates a given piece of json source.
**/
$.evalJSON = function(src)
{
if (typeof(JSON) == 'object' &&JSON.parse)
return JSON.parse(src)
return eval("(" + src + ")")
}
/** jQuery.secureEvalJSON(src)
Evals JSON in a way that is *more* secure.
**/
$.secureEvalJSON = function(src)
{
if (typeof(JSON) == 'object' &&JSON.parse)
return JSON.parse(src)
var filtered = src
filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@')
filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, '')
if (/^[\],:{}\s]*$/.test(filtered))
return eval("(" + src + ")")
else
throw new SyntaxError("Error parsing JSON, source is not valid.")
}
/** jQuery.quoteString(string)
Returns a string-repr of a string, escaping quotes intelligently.
Mostly a support function for toJSON.
Examples:
>>>jQuery.quoteString("apple")
"apple"
>>>jQuery.quoteString('"Where are we going?", she asked.')
"\"Where are we going?\", she asked."
**/
$.quoteString = function(string)
{
if (string.match(_escapeable))
{
return '"' + string.replace(_escapeable, function (a)
{
var c = _meta[a]
if (typeof c === 'string') return c
c = a.charCodeAt()
return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16)
}) + '"'
}
return '"' + string + '"'
}
var _escapeable = /["\\\x00-\x1f\x7f-\x9f]/g
var _meta = {
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
}
})(jQuery)
方法如下：
12345678910 function tojson(arr){
if(!arr.length) return null
var i = 0
len = arr.length, array = []
for(i<leni++){
array.push({"projectname":arr[i][0],"projectnumber":arr[i][1]}) }
return JSON.stringify(array) }
JavaScript一种直译式脚本语言，是一种动态类型、弱类型、基于原型的语言，内置支持类型。它的解释器被称为JavaScript引擎，为浏览器的一部分，广泛用于客户端的脚本语言，最早是在HTML（标准通用标记语言下的一个应用）网页上使用，用来给HTML网页增加动态功能。
在1995年时，由Netscape公司的Brendan Eich，在网景导航者浏览器上首次设计实现而成。因为Netscape与Sun合作，Netscape管理层希望它外观看起来像Java，因此取名为JavaScript。但实际上它的语法风格与Self及Scheme较为接近。
为了取得技术优势，微软推出了JScript，CEnvi推出ScriptEase，与JavaScript同样可在浏览器上运行。为了统一规格，因为JavaScript兼容于ECMA标准，因此也称为ECMAScript。
