js处理 json数据代码格式化
function jsonFormat(txt, tiperror, 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*$/.test(txt)) { if (tiperror) alert('数据为空,无法格式化! '); return; } // 替换\r\n 换行 txt=txt.replace(/\\r/g,"CRAPAPI_R"); txt=txt.replace(/\\n/g,"CRAPAPI_N"); txt=txt.replace(/\\t/g,"CRAPAPI_T"); var data; try { data=$.parseJSON(txt); } catch (e) { if (tiperror) 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.replace(/\"/gm, '\\"'); // 替换\r\n 换行 value=value.replace(/CRAPAPI_R/g,"\\r"); value=value.replace(/CRAPAPI_N/g,"\\n"); value=value.replace(/CRAPAPI_T/g,"\\t"); value = '"' + value + '"'; } draw.push(tab + (formObj ? ('"' + name + '":') : '') + value + (isLast ? '' : ',') + line); } ; }; var isLast = true, indent = 0; notify('', data, isLast, indent, false); return draw.join(''); }