js实现json格式化，json在线格式化代码教程如下：
输入json代码
实现结果：格式化
js实现代码如下：
//parser
var jsl = typeof(jsl) === 'undefined' ? {} : jsl;jsl.parser = function(){var a=!0,b=!1,c={},d=function(){var a={trace:function(){},yy:{},symbols_:{error:2,JSONString:3,STRING:4,JSONNumber:5,NUMBER:6,JSONNullLiteral:7,NULL:8,JSONBooleanLiteral:9,TRUE:10,FALSE:11,JSONText:12,JSONObject:13,EOF:14,JSONArray:15,JSONValue:16,"{":17,"}":18,JSONMemberList:19,JSONMember:20,":":21,",":22,"[":23,"]":24,JSONElementList:25,$accept:0,$end:1},terminals_:{2:"error",4:"STRING",6:"NUMBER",8:"NULL",10:"TRUE",11:"FALSE",14:"EOF",17:"{",18:"}",21:":",22:",",23:"[",24:"]"},productions_:[0,[3,1],[5,1],[7,1],[9,1],[9,1],[12,2],[12,2],[16,1],[16,1],[16,1],[16,1],[16,1],[16,1],[13,2],[13,3],[20,3],[19,1],[19,3],[15,2],[15,3],[25,1],[25,3]],performAction:function(a,b,c,d,e,f,g){var h=f.length-1;switch(e){case 1:this.$=a;break;case 2:this.$=Number(a);break;case 3:this.$=null;break;case 4:this.$=!0;break;case 5:this.$=!1;break;case 6:return this.$=f[h-1];case 7:return this.$=f[h-1];case 8:this.$=f[h];break;case 9:this.$=f[h];break;case 10:this.$=f[h];break;case 11:this.$=f[h];break;case 12:this.$=f[h];break;case 13:this.$=f[h];break;case 14:this.$={};break;case 15:this.$=f[h-1];break;case 16:this.$=[f[h-2],f[h]];break;case 17:this.$={},this.$[f[h][0]]=f[h][1];break;case 18:this.$=f[h-2],f[h-2][f[h][0]]=f[h][1];break;case 19:this.$=[];break;case 20:this.$=f[h-1];break;case 21:this.$=[f[h]];break;case 22:this.$=f[h-2],f[h-2].push(f[h])}},table:[{12:1,13:2,15:3,17:[1,4],23:[1,5]},{1:[3]},{14:[1,6]},{14:[1,7]},{3:11,4:[1,12],18:[1,8],19:9,20:10},{3:18,4:[1,12],5:19,6:[1,25],7:16,8:[1,22],9:17,10:[1,23],11:[1,24],13:20,15:21,16:15,17:[1,4],23:[1,5],24:[1,13],25:14},{1:[2,6]},{1:[2,7]},{14:[2,14],18:[2,14],22:[2,14],24:[2,14]},{18:[1,26],22:[1,27]},{18:[2,17],22:[2,17]},{21:[1,28]},{18:[2,1],21:[2,1],22:[2,1],24:[2,1]},{14:[2,19],18:[2,19],22:[2,19],24:[2,19]},{22:[1,30],24:[1,29]},{22:[2,21],24:[2,21]},{18:[2,8],22:[2,8],24:[2,8]},{18:[2,9],22:[2,9],24:[2,9]},{18:[2,10],22:[2,10],24:[2,10]},{18:[2,11],22:[2,11],24:[2,11]},{18:[2,12],22:[2,12],24:[2,12]},{18:[2,13],22:[2,13],24:[2,13]},{18:[2,3],22:[2,3],24:[2,3]},{18:[2,4],22:[2,4],24:[2,4]},{18:[2,5],22:[2,5],24:[2,5]},{18:[2,2],22:[2,2],24:[2,2]},{14:[2,15],18:[2,15],22:[2,15],24:[2,15]},{3:11,4:[1,12],20:31},{3:18,4:[1,12],5:19,6:[1,25],7:16,8:[1,22],9:17,10:[1,23],11:[1,24],13:20,15:21,16:32,17:[1,4],23:[1,5]},{14:[2,20],18:[2,20],22:[2,20],24:[2,20]},{3:18,4:[1,12],5:19,6:[1,25],7:16,8:[1,22],9:17,10:[1,23],11:[1,24],13:20,15:21,16:33,17:[1,4],23:[1,5]},{18:[2,18],22:[2,18]},{18:[2,16],22:[2,16]},{22:[2,22],24:[2,22]}],defaultActions:{6:[2,6],7:[2,7]},parseError:function(a,b){throw new Error(a)},parse:function(a){function o(){var a;a=b.lexer.lex()||1,typeof a!="number"&&(a=b.symbols_[a]||a);return a}function n(a){c.length=c.length-2*a,d.length=d.length-a,e.length=e.length-a}var b=this,c=[0],d=[null],e=[],f=this.table,g="",h=0,i=0,j=0,k=2,l=1;this.lexer.setInput(a),this.lexer.yy=this.yy,this.yy.lexer=this.lexer,typeof this.lexer.yylloc=="undefined"&&(this.lexer.yylloc={});var m=this.lexer.yylloc;e.push(m),typeof this.yy.parseError=="function"&&(this.parseError=this.yy.parseError);var p,q,r,s,t,u,v={},w,x,y,z;for(;;){r=c[c.length-1],this.defaultActions[r]?s=this.defaultActions[r]:(p==null&&(p=o()),s=f[r]&&f[r][p]);if(typeof s=="undefined"||!s.length||!s[0]){if(!j){z=[];for(w in f[r])this.terminals_[w]&&w>2&&z.push("'"+this.terminals_[w]+"'");var A="";this.lexer.showPosition?A="Parse error on line "+(h+1)+":\n"+this.lexer.showPosition()+"\nExpecting "+z.join(", "):A="Parse error on line "+(h+1)+": Unexpected "+(p==1?"end of input":"'"+(this.terminals_[p]||p)+"'"),this.parseError(A,{text:this.lexer.match,token:this.terminals_[p]||p,line:this.lexer.yylineno,loc:m,expected:z})}if(j==3){if(p==l)throw new Error(A||"Parsing halted.");i=this.lexer.yyleng,g=this.lexer.yytext,h=this.lexer.yylineno,m=this.lexer.yylloc,p=o()}for(;;){if(k.toString()in f[r])break;if(r==0)throw new Error(A||"Parsing halted.");n(1),r=c[c.length-1]}q=p,p=k,r=c[c.length-1],s=f[r]&&f[r][k],j=3}if(s[0]instanceof Array&&s.length>1)throw new Error("Parse Error: multiple actions possible at state: "+r+", token: "+p);switch(s[0]){case 1:c.push(p),d.push(this.lexer.yytext),e.push(this.lexer.yylloc),c.push(s[1]),p=null,q?(p=q,q=null):(i=this.lexer.yyleng,g=this.lexer.yytext,h=this.lexer.yylineno,m=this.lexer.yylloc,j>0&&j--);break;case 2:x=this.productions_[s[1]][1],v.$=d[d.length-x],v._$={first_line:e[e.length-(x||1)].first_line,last_line:e[e.length-1].last_line,first_column:e[e.length-(x||1)].first_column,last_column:e[e.length-1].last_column},u=this.performAction.call(v,g,i,h,this.yy,s[1],d,e);if(typeof u!="undefined")return u;x&&(c=c.slice(0,-1*x*2),d=d.slice(0,-1*x),e=e.slice(0,-1*x)),c.push(this.productions_[s[1]][0]),d.push(v.$),e.push(v._$),y=f[c[c.length-2]][c[c.length-1]],c.push(y);break;case 3:return!0}}return!0}},f=function(){var a={EOF:1,parseError:function(a,b){if(this.yy.parseError)this.yy.parseError(a,b);else throw new Error(a)},setInput:function(a){this._input=a,this._more=this._less=this.done=!1,this.yylineno=this.yyleng=0,this.yytext=this.matched=this.match="",this.conditionStack=["INITIAL"],this.yylloc={first_line:1,first_column:0,last_line:1,last_column:0};return this},input:function(){var a=this._input[0];this.yytext+=a,this.yyleng++,this.match+=a,this.matched+=a;var b=a.match(/\n/);b&&this.yylineno++,this._input=this._input.slice(1);return a},unput:function(a){this._input=a+this._input;return this},more:function(){this._more=!0;return this},pastInput:function(){var a=this.matched.substr(0,this.matched.length-this.match.length);return(a.length>20?"...":"")+a.substr(-20).replace(/\n/g,"")},upcomingInput:function(){var a=this.match;a.length<20&&(a+=this._input.substr(0,20-a.length));return(a.substr(0,20)+(a.length>20?"...":"")).replace(/\n/g,"")},showPosition:function(){var a=this.pastInput(),b=Array(a.length+1).join("-");return a+this.upcomingInput()+"\n"+b+"^"},next:function(){if(this.done)return this.EOF;this._input||(this.done=!0);var a,b,c,d;this._more||(this.yytext="",this.match="");var e=this._currentRules();for(var f=0;f<e.length;f++){b=this._input.match(this.rules[e[f]]);if(b){d=b[0].match(/\n.*/g),d&&(this.yylineno+=d.length),this.yylloc={first_line:this.yylloc.last_line,last_line:this.yylineno+1,first_column:this.yylloc.last_column,last_column:d?d[d.length-1].length-1:this.yylloc.last_column+b[0].length},this.yytext+=b[0],this.match+=b[0],this.matches=b,this.yyleng=this.yytext.length,this._more=!1,this._input=this._input.slice(b[0].length),this.matched+=b[0],a=this.performAction.call(this,this.yy,this,e[f],this.conditionStack[this.conditionStack.length-1]);if(a)return a;return}}if(this._input==="")return this.EOF;this.parseError("Lexical error on line "+(this.yylineno+1)+". Unrecognized text.\n"+this.showPosition(),{text:"",token:null,line:this.yylineno})},lex:function(){var a=this.next();return typeof a!="undefined"?a:this.lex()},begin:function(a){this.conditionStack.push(a)},popState:function(){return this.conditionStack.pop()},_currentRules:function(){return this.conditions[this.conditionStack[this.conditionStack.length-1]].rules}};a.performAction=function(a,b,c,d){var e=d;switch(c){case 0:break;case 1:return 6;case 2:b.yytext=b.yytext.substr(1,b.yyleng-2);return 4;case 3:return 17;case 4:return 18;case 5:return 23;case 6:return 24;case 7:return 22;case 8:return 21;case 9:return 10;case 10:return 11;case 11:return 8;case 12:return 14;case 13:return"INVALID"}},a.rules=[/^\s+/,/^-?([0-9]|[1-9][0-9]+)(\.[0-9]+)?([eE][-+]?[0-9]+)?\b/,/^"(\\["bfnrt/\\]|\\u[a-fA-F0-9]{4}|[^\0-\x09\x0a-\x1f"\\])*"/,/^\{/,/^\}/,/^\[/,/^\]/,/^,/,/^:/,/^true\b/,/^false\b/,/^null\b/,/^$/,/^./],a.conditions={INITIAL:{rules:[0,1,2,3,4,5,6,7,8,9,10,11,12,13],inclusive:!0}};return a}();a.lexer=f;return a}();typeof a!="undefined"&&typeof c!="undefined"&&(c.parser=d,c.parse=function(){return d.parse.apply(d,arguments)},c.main=function(b){if(!b[1])throw new Error("Usage: "+b[0]+" FILE");if(typeof process!="undefined")var d=a("fs").readFileSync(a("path").join(process.cwd(),b[1]),"utf8");else var e=a("file").path(a("file").cwd()),d=e.join(b[1]).read({charset:"utf-8"});return c.parser.parse(d)},typeof b!="undefined"&&a.main===b&&c.main(typeof process!="undefined"?process.argv.slice(1):a("system").args));return c}();
//format
var jsl=typeof jsl==='undefined'?{}:jsl;jsl.format=(function(){function repeat(s,count){return new Array(count+1).join(s)}function formatJson(json){var i=0,il=0,tab=" ",newJson="",indentLevel=0,inString=false,currentChar=null;for(i=0,il=json.length;i<il;i+=1){currentChar=json.charAt(i);switch(currentChar){case'{':case'[':if(!inString){newJson+=currentChar+"\n"+repeat(tab,indentLevel+1);indentLevel+=1}else{newJson+=currentChar}break;case'}':case']':if(!inString){indentLevel-=1;newJson+="\n"+repeat(tab,indentLevel)+currentChar}else{newJson+=currentChar}break;case',':if(!inString){newJson+=",\n"+repeat(tab,indentLevel)}else{newJson+=currentChar}break;case':':if(!inString){newJson+=": "}else{newJson+=currentChar}break;case' ':case"\n":case"\t":if(inString){newJson+=currentChar}break;case'"':if(i>0&&json.charAt(i-1)!=='\\'){inString=!inString}newJson+=currentChar;break;default:newJson+=currentChar;break}}return newJson}return{"formatJson":formatJson}}());
//interactions.js
var jsl=typeof jsl==='undefined'?{}:jsl;$.fn.caret=function(begin,end){if(this.length===0){return}if(typeof begin==='number'){end=(typeof end==='number')?end:begin;return this.each(function(){if(this.setSelectionRange){this.focus();this.setSelectionRange(begin,end)}else if(this.createTextRange){var range=this.createTextRange();range.collapse(true);range.moveEnd('character',end);range.moveStart('character',begin);range.select()}})}else{if(this[0].setSelectionRange){begin=this[0].selectionStart;end=this[0].selectionEnd}else if(document.selection&&document.selection.createRange){var range=document.selection.createRange();begin=-range.duplicate().moveStart('character',-100000);end=begin+range.text.length}return{"begin":begin,"end":end}}};jsl.interactions=(function(){var reformatParam,reformat,compress;function getNthPos(searchStr,char,pos){var i,charCount=0,strArr=searchStr.split(char);if(pos===0){return 0}for(i=0;i<pos;i++){if(i>=strArr.length){return-1}charCount+=strArr[i].length+char.length}return charCount}function getURLParameter(name){param=(new RegExp(name+'=(.+?)(&|$)').exec(location.search)||['',null])[1];if(param){return decodeURIComponent(param)}else{return null}}function validate(){var lineNum,lineMatches,lineStart,lineEnd,jsonVal,result;jsonVal=$('#json_input').val();try{result=jsl.parser.parse(jsonVal);if(result){$('#results').show().removeClass('alert-danger').addClass('alert-success');$('div.linedwrap').removeClass('redBorder').addClass('greenBorder');$('#results').text('Json鏍煎紡姝ｇ‘');if(reformat){$('#json_input').val(JSON.stringify(JSON.parse(jsonVal),null," "))}if(compress){$('#json_input').val(JSON.stringify(JSON.parse(jsonVal),null,""))}}else{alert("An unknown error occurred. Please contact Arc90.")}}catch(parseException){try{if(reformat){jsonVal=jsl.format.formatJson($('#json_input').val());$('#json_input').val(jsonVal);result=jsl.parser.parse($('#json_input').val())}}catch(e){parseException=e}lineMatches=parseException.message.match(/line ([0-9]*)/);if(lineMatches&&typeof lineMatches==="object"&&lineMatches.length>1){lineNum=parseInt(lineMatches[1],10);if(lineNum===1){lineStart=0}else{lineStart=getNthPos(jsonVal,"\n",lineNum-1)}lineEnd=jsonVal.indexOf("\n",lineStart);if(lineEnd<0){lineEnd=jsonVal.length}$('#json_input').focus().caret(lineStart,lineEnd)}$('#results').text(parseException.message);$('#results').show().removeClass('alert-success').addClass('alert-danger');$('div.linedwrap').removeClass('greenBorder').addClass('redBorder')}$('#loadSpinner').hide()}function init(){reformatParam=getURLParameter('reformat');reformat=reformatParam!=='0'&&reformatParam!=='no';compress=reformatParam==='compress',jsonParam=getURLParameter('json');if(compress){$('#headerText').html('JSONLint<span class="light">Compressor</span>')}if(!reformat){$('#headerText').html('JSONLint<span class="light">Lite</span>')}$('#validate').click(function(){$('#results_header, #loadSpinner').show();var jsonVal=$.trim($('#json_input').val());if(jsonVal.substring(0,4).toLowerCase()==="http"){$.post("ApiTools/Common.ashx?action=PostUrl",{"url":jsonVal},function(data){$('#json_input').val(data.Value);validate()},'json')}else{validate()}return false});$('#reset').click(function(){$('#json_input').val('').focus()});$('#faqButton').click(function(){$('#faq').slideToggle()});if(jsonParam){$('#json_input').val(jsonParam);$('#validate').click()}}return{'init':init}}());$(function(){jsl.interactions.init()});
function empty(){$("#json_input").val("");$("#results").removeClass('alert-success').addClass('alert-danger');$("#results").html("璇疯緭鍏son瀛楃涓� 鎴栬€� Url鎺ュ彛鍦板潃");$('#json_input').focus()} function btnqq(objstr) { objstr.href = 'http://shang.qq.com/wpa/qunwpa?idkey=cc0696dec6bde8b5857746ba73c187fedcee48f2359d3b925d20ae1f2a887992'; }function btnqq2(objstr) { objstr.href = 'http://shang.qq.com/wpa/qunwpa?idkey=85e026ae3fd00554fdf42bf268bf83c9ede6da80b4d93a8bdc3f12bd1ae7f637'; }显示效果：json在线解析
参考文章：http://www.theicstock.com/gonglve/1075.html
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