标签：javascript xml json 转换
/*
### jQuery XML to JSON Plugin v1.2 - 2013-02-18 ###
* http://www.fyneworks.com/ - diego@fyneworks.com
* Licensed under http://en.wikipedia.org/wiki/MIT_License
###
Website: http://www.fyneworks.com/jquery/xml-to-json/
*//*
# INSPIRED BY: http://www.terracoder.com/
AND: http://www.thomasfrank.se/xml_to_json.html
AND: http://www.kawa.net/works/js/xml/objtree-e.html
*//*
This simple script converts XML (document of code) into a JSON object. It is the combination of 2
'xml to json' great parsers (see below) which allows for both 'simple' and 'extended' parsing modes.
*/
// Avoid collisions
;if(window.jQuery) (function($){
// Add function to jQuery namespace
$.extend({
// converts xml documents and xml text to json object
xml2json: function(xml, extended) {
if(!xml) return {}; // quick fail
//### PARSER LIBRARY
// Core function
function parseXML(node, simple){
if(!node) return null;
var txt = '', obj = null, att = null;
var nt = node.nodeType, nn = jsVar(node.localName || node.nodeName);
var nv = node.text || node.nodeValue || '';
/*DBG*/ //if(window.console) console.log(['x2j',nn,nt,nv.length+' bytes']);
if(node.childNodes){
if(node.childNodes.length>0){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'CHILDREN',node.childNodes]);
$.each(node.childNodes, function(n,cn){
var cnt = cn.nodeType, cnn = jsVar(cn.localName || cn.nodeName);
var cnv = cn.text || cn.nodeValue || '';
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>a',cnn,cnt,cnv]);
if(cnt == 8){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>b',cnn,'COMMENT (ignore)']);
return; // ignore comment node
}
else if(cnt == 3 || cnt == 4 || !cnn){
// ignore white-space in between tags
if(cnv.match(/^\s+$/)){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>c',cnn,'WHITE-SPACE (ignore)']);
return;
};
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>d',cnn,'TEXT']);
txt += cnv.replace(/^\s+/,'').replace(/\s+$/,'');
// make sure we ditch trailing spaces from markup
}
else{
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>e',cnn,'OBJECT']);
obj = obj || {};
if(obj[cnn]){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>f',cnn,'ARRAY']);
// http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child
if(!obj[cnn].length) obj[cnn] = myArr(obj[cnn]);
obj[cnn] = myArr(obj[cnn]);
obj[cnn][ obj[cnn].length ] = parseXML(cn, true/* simple */);
obj[cnn].length = obj[cnn].length;
}
else{
/*DBG*/ //if(window.console) console.log(['x2j',nn,'node>g',cnn,'dig deeper...']);
obj[cnn] = parseXML(cn);
};
};
});
};//node.childNodes.length>0
};//node.childNodes
if(node.attributes){
if(node.attributes.length>0){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'ATTRIBUTES',node.attributes])
att = {}; obj = obj || {};
$.each(node.attributes, function(a,at){
var atn = jsVar(at.name), atv = at.value;
att[atn] = atv;
if(obj[atn]){
/*DBG*/ //if(window.console) console.log(['x2j',nn,'attr>',atn,'ARRAY']);
// http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child
//if(!obj[atn].length) obj[atn] = myArr(obj[atn]);//[ obj[ atn ] ];
obj[cnn] = myArr(obj[cnn]);
obj[atn][ obj[atn].length ] = atv;
obj[atn].length = obj[atn].length;
}
else{
/*DBG*/ //if(window.console) console.log(['x2j',nn,'attr>',atn,'TEXT']);
obj[atn] = atv;
};
});
//obj['attributes'] = att;
};//node.attributes.length>0
};//node.attributes
if(obj){
obj = $.extend( (txt!='' ? new String(txt) : {}),/* {text:txt},*/ obj || {}/*, att || {}*/);
txt = (obj.text) ? (typeof(obj.text)=='object' ? obj.text : [obj.text || '']).concat([txt]) : txt;
if(txt) obj.text = txt;
txt = '';
};
var out = obj || txt;
//console.log([extended, simple, out]);
if(extended){
if(txt) out = {};//new String(out);
txt = out.text || txt || '';
if(txt) out.text = txt;
if(!simple) out = myArr(out);
};
return out;
};// parseXML
// Core Function End
// Utility functions
var jsVar = function(s){ return String(s || '').replace(/-/g,"_"); };
// NEW isNum function: 01/09/2010
// Thanks to Emile Grau, GigaTecnologies S.L., www.gigatransfer.com, www.mygigamail.com
function isNum(s){
// based on utility function isNum from xml2json plugin (http://www.fyneworks.com/ - diego@fyneworks.com)
// few bugs corrected from original function :
// - syntax error : regexp.test(string) instead of string.test(reg)
// - regexp modified to accept comma as decimal mark (latin syntax : 25,24 )
// - regexp modified to reject if no number before decimal mark : ".7" is not accepted
// - string is "trimmed", allowing to accept space at the beginning and end of string
var regexp=/^((-)?([0-9]+)(([\.\,]{0,1})([0-9]+))?$)/
return (typeof s == "number") || regexp.test(String((s && typeof s == "string") ? jQuery.trim(s) : ''));
};
// OLD isNum function: (for reference only)
//var isNum = function(s){ return (typeof s == "number") || String((s && typeof s == "string") ? s : '').test(/^((-)?([0-9]*)((\.{0,1})([0-9]+))?$)/); };
var myArr = function(o){
// http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child
//if(!o.length) o = [ o ]; o.length=o.length;
if(!$.isArray(o)) o = [ o ]; o.length=o.length;
// here is where you can attach additional functionality, such as searching and sorting...
return o;
};
// Utility functions End
//### PARSER LIBRARY END
// Convert plain text to xml
if(typeof xml=='string') xml = $.text2xml(xml);
// Quick fail if not xml (or if this is a node)
if(!xml.nodeType) return;
if(xml.nodeType == 3 || xml.nodeType == 4) return xml.nodeValue;
// Find xml root node
var root = (xml.nodeType == 9) ? xml.documentElement : xml;
// Convert xml to json
var out = parseXML(root, true /* simple */);
// Clean-up memory
xml = null; root = null;
// Send output
return out;
},
// Convert text to XML DOM
text2xml: function(str) {
// NOTE: I'd like to use jQuery for this, but jQuery makes all tags uppercase
//return $(xml)[0];
var out;
try{
var xml = ((!$.support.opacity && !$.support.style))?new ActiveXObject("Microsoft.XMLDOM"):new DOMParser();
xml.async = false;
}catch(e){ throw new Error("XML Parser could not be instantiated") };
try{
if((!$.support.opacity && !$.support.style)) out = (xml.loadXML(str))?xml:false;
else out = xml.parseFromString(str, "text/xml");
}catch(e){ throw new Error("Error parsing XML string") };
return out;
}
}); // extend $
})(jQuery);
别人写的，需要用到jQuery库，用法$.xml2json()
标签：javascript xml json 转换
原文地址：http://blog.csdn.net/decoderworld/article/details/38905215
