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// ÏÂÃæ´úÂë¿éʵÏÖÁËstring.parseJSON·½·¨
(function(s){
// This prototype has been released into the Public Domain, 2007-03-20
// Original Authorship: Douglas Crockford
// Originating Website: http://www.JSON.org
// Originating URL : http://www.JSON.org/JSON.js
// ÔöÇ¿StringÔÐÍ.ÎÒÃÇÀûÓÃÕâ¸ö¼´Ê±Ö´ÐеÄÄäÃûº¯Êý±ÜÃâʹÓÃÈ«¾Ö±äÁ¿.
// mÊÇתÒå×Ö·û±í
var m ={
'\b':'\\b',
'\t':'\\t',
'\n':'\\n',
'\f':'\\f',
'\r':'\\r',
'"':'\\"',
'\\':'\\\\'
};
s.parseJSON =function(filter){
// ½âÎö·ÖÈý²½½øÐÐ,µÚÒ»²½,ÎÒÃÇÏÈÓÃÕýÔò±í´ïʽ¹ýÂË·ÇJSON×Ö·û.ÎÒÃÇ»áÌØ±ð¹Ø×¢"()"Óë"new",ÒòΪËüÃÇ
// »á´¥·¢µ÷ÓÃ,»¹ÓÐ"=",Ëü»áµ¼Ö¸³Öµ´Ó¶ø·¢Éú±ä»¯.ΪÁ˰²È«,ÎÒÃǻᶪÆúËùÓв»ÆÚ´ýµÄ×Ö·û.
try{
if(/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u
\n\r\t])+?$/.
test(this)) {
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var j = eval('(' + this + ')');
// µÚÈý²½ÊÇ¿ÉÑ¡µÄ,ÎÒÃǵݹé±éÀúÕâ¸öнṹ,°Ñÿ¸öÃû/Öµ¶Ô´«µÝµ½Ò»¸ö¹ýÂ˺¯Êý,ÒÔ±ã×öһЩת»».
if (typeof filter === 'function') {
function walk(k, v) {
if (v && typeof v === 'object') {
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