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SOP/sop-website/website-front/assets/js/format.js

45 lines
2.2 KiB

6 years ago
/**
* 格式化json字符串.
* alert(formatJson('{"code":"0","data":[{"goods_name":"iPhoneX","id":1,"price":8000},{"goods_name":"三星","id":2,"price":7000}]}'))
* @param txt json串
* @param compress
* @returns
*/
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('');
}