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function formatJson(txt,compress/*是否为压缩模式*/){/* 格式化JSON源码(对象转换为JSON文本) */ var indentChar = ‘ ‘; if(/^\s*$/.test(txt)){ alert(‘数据为空,无法格式化! ‘); return; } try{var data=eval(‘(‘+txt+‘)‘);} catch(e){ alert(‘数据源语法错误,格式化失败! 错误信息: ‘+e.description,‘err‘); return; }; var draw=[],last=false,This=this,line=compress?‘‘:‘\n‘,nodeCount=0,maxDepth=0; var notify=function(name,value,isLast,indent/*缩进*/,formObj){ nodeCount++;/*节点计数*/ for (var i=0,tab=‘‘;i<indent;i++ )tab+=indentChar;/* 缩进HTML */ tab=compress?‘‘:tab;/*压缩模式忽略缩进*/ maxDepth=++indent;/*缩进递增并记录*/ if(value&&value.constructor==Array){/*处理数组*/ draw.push(tab+(formObj?(‘"‘+name+‘":‘):‘‘)+‘[‘+line);/*缩进‘[‘ 然后换行*/ for (var i=0;i<value.length;i++) notify(i,value[i],i==value.length-1,indent,false); draw.push(tab+‘]‘+(isLast?line:(‘,‘+line)));/*缩进‘]‘换行,若非尾元素则添加逗号*/ }else if(value&&typeof value==‘object‘){/*处理对象*/ draw.push(tab+(formObj?(‘"‘+name+‘":‘):‘‘)+‘{‘+line);/*缩进‘{‘ 然后换行*/ var len=0,i=0; for(var key in value)len++; for(var key in value)notify(key,value[key],++i==len,indent,true); draw.push(tab+‘}‘+(isLast?line:(‘,‘+line)));/*缩进‘}‘换行,若非尾元素则添加逗号*/ }else{ if(typeof value==‘string‘)value=‘"‘+value+‘"‘; draw.push(tab+(formObj?(‘"‘+name+‘":‘):‘‘)+value+(isLast?‘‘:‘,‘)+line); }; }; var isLast=true,indent=0; notify(‘‘,data,isLast,indent,false); return draw.join(‘‘); }
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原文地址:http://www.cnblogs.com/linying/p/5377319.html