<script>     var APP=function(){         var format=function(json){             var reg=null,                 result='';                 pad=0,                 PADDING='    ';             if (typeof json !== 'string') {                 json = JSON.stringify(json);             } else {                 json = JSON.parse(json);                 json = JSON.stringify(json);             }             // 在大括号前后添加换行             reg = /([\{\}])/g;             json = json.replace(reg, '\r\n$1\r\n');             // 中括号前后添加换行             reg = /([\[\]])/g;             json = json.replace(reg, '\r\n$1\r\n');             // 逗号后面添加换行             reg = /(\,)/g;             json = json.replace(reg, '$1\r\n');             // 去除多余的换行             reg = /(\r\n\r\n)/g;             json = json.replace(reg, '\r\n');             // 逗号前面的换行去掉             reg = /\r\n\,/g;             json = json.replace(reg, ',');             //冒号前面缩进             reg = /\:/g;             json = json.replace(reg, ': ');             //对json按照换行进行切分然后处理每一个小块             $.each(json.split('\r\n'), function(index, node) {                 var i = 0,                     indent = 0,                     padding = '';                 //这里遇到{、[时缩进等级加1，遇到}、]时缩进等级减1，没遇到时缩进等级不变                 if (node.match(/\{$/) || node.match(/\[$/)) {                     indent = 1;                 } else if (node.match(/\}/) || node.match(/\]/)) {                     if (pad !== 0) {                         pad -= 1;                     }                 } else {                     indent = 0;                 }                    //padding保存实际的缩进                 for (i = 0; i < pad; i++) {                     padding += PADDING;                 }                 //添加代码高亮                 node = node.replace(/([\{\}])/g,"<span class='ObjectBrace'>$1</span>");                 node = node.replace(/([\[\]])/g,"<span class='ArrayBrace'>$1</span>");                 node = node.replace(/(\".*\")(\:)(.*)(\,)?/g,"<span class='PropertyName'>$1</span>$2$3$4");                 node = node.replace(/\"([^"]*)\"(\,)?$/g,"<span class='String'>\"$1\"</span><span class='Comma'>$2</span>");                 node = node.replace(/(-?\d+)(\,)?$/g,"<span class='Number'>$1</span><span class='Comma'>$2</span>");                 result += padding + node + '<br>';                 pad += indent;             });             return result;         };         return {             "format":format,         };     }(); </script>