Javascript 如何从控制台查看或输出很长的字符串

我正在玩弄firefox控制台，我想查看对象的内容

我首先在对象上调用了

JSON.stringify（object）

，但得到了

TypeError:cyclic object value

error

我发现解决方案是用这段代码排除已经序列化的对象

seen = []

JSON.stringify(obj, function(key, val) {
   if (val != null && typeof val == "object") {
        if (seen.indexOf(val) >= 0)
            return
        seen.push(val)
    }
    return val
})

当我在上面的代码片段上调用JSON.stringify时，我得到了我正在寻找的部分对象，但在底部我得到了一条消息：

您试图查看的字符串太长，Web控制台无法显示

我想将这个字符串输出到一个文件中或以某种方式查看它

我尝试创建一个函数，然后在该函数上调用console.log：

console.log(myFunction);

返回的

log（myFunction（））； 未定义 未定义

---

我不知道这是否是一个实际的解决方案。如果是这样，我如何访问控制台日志以查看我的对象？您可以将结果添加到当前页面的某个位置，如下图所示，然后复制/粘贴，如果需要：

var jsonStr=JSON.stringify（biggerInlinedJson（），null，2）；
console.log（jsonStr）；
/*
document.body.innerText=jsonStr；
/*/
var el=document.createElement（“TEXTAREA”）；
el.innerText=jsonStr；
文件.正文.附件（el）；
el=document.createElement（“PRE”）；
el.innerText=jsonStr；
文件.正文.附件（el）；
//*/
函数biggerInlinedJson（）{
//一小部分https://github.com/zemirco/sf-city-lots-json/blob/master/citylots.json
返回{“type”：“FeatureCollection”，“features”：[{“type”：“Feature”，“properties”：{“MAPBLKLOT”：“0001001”，“BLKLOT”：“0001001”，“BLOCK_NUM”：“0001”，“LOT_NUM”：“001”，“FROM_ST”：“0”，“TO_ST”：“0”，“STREET”：“UNKNOWN”，“ST_type”：“null”，“奇偶”：“E”}，“geometry”：{“type”：“多边形”，“坐标”：[[-122.422003528252475,37.8084800967251,0.0]，[-122.422076013325281,37.808835019815085,0.0]，-122.421102174348633,37.808803534992904,0.0]，-122.421062569067274,37.808601056818148,0.0]，-122.422003528252475,37.8084800967251,0.0]，{“类型”：“特征”，“属性”：{“MAPBLKLOT”：“0002001”，“BLKLOT”：“0002001”，“BLKLOT”：“0002001”，“BLOCKïNUM”0002”，“LOTïNUM“001”，“ST”“未知”，“街道”：“0”：”，“ST_TYPE”：null，“奇偶”：“E”}，“几何”：{“TYPE”：“Polygon”，“坐标”：[[[-122.42082593937107,37.808631474146033,0.0]，-122.420858049679694,37.808795641369592,0.0]，-122.419811958704301,37.808761809714007,0.0]，-122.42082593937107,37.8086314746033,0.0]，{“TYPE”：“特征”、“属性”；“Klot”，“BL0002”；“{，“街区编号”为“0004”，“地块编号”为“002”，“从街编号”为“0”，“到街编号”为“0”，“街道编号”为“未知”，“街编号”为“空”，“奇偶编号”为“E”}，“几何图形”为“{”类型为“多边形”，“坐标”：[[[-122.415701204606876,37.8083272761461,0.0]，-122.415760743593196,37.808630700240904,0.0]，-122.4137878789133404,37.8085801319841,0.0]，-122.4158767670.0]]}}，{“类型”：“特征”，“属性”：{“MAPBLKLOT”：“0005001”，“BLKLOT”：“0005001”，“BLOCK_NUM”：“0005”，“LOT_NUM”：“001”，“FROM_ST”：“206”，“TO_ST”：“286”，“STREET”：“JEFFERSON”，“ST_type”：“ST”，“奇偶”：“E”}，“几何体”：{“类型”：“多边形”，“坐标”：[[[-122.417346670944355,37.808121127609709,0.0]，-122.417444980446,37.808662720,0]，[-122.416003128921787,37.808638547938997,0.0]，-122.41593547450509,37.808293744156337,0.0]，-122.417346670944355,37.808121127609709,0.0]}，{“类型”：“特征”、“属性”：{“MAPBLKLOT”：“0006001”、“BLKLOT”：“0006001”、“BLOCK峈NUM”：“0006”、“LOT峈NUM”：“001”、“FROM峈ST”：“350”、“TO峈ST”街“、“366”、“ST”街“、“奇数”、“杰弗逊”街“：”几何学“：{”类型“：”多边形“，”坐标“：[[[-122.41897465424474,37.807907564012595,0.0]，-122.419147512636712,37.808655940108665,0.0]，-122.4186230498371,37.808723347475208,0.0]，-122.417699830020709,37.808693471445764,0.0]，-122.417580761531511,37.808086708494429,0.0.0]，“类型特征”{]属性“{”MAPBLKLOT“：”0007001“，”BLKLOT“：”0007001“，”BLOCK_NUM“：”0007“，”LOT_NUM“：”001“，”FROM_ST“：”2936“，”TO_ST“：”2936“，”STREET“：”海德“，”ST_TYPE“：”ST“，”奇偶“：”E“，”几何“，”{”类型“：”多边形“，”坐标“：[[[[[[-122.420642521491033,37.807693733698322,0.0]，-122.420789444036856,37.80844486632,0.0]，[-122.419379916821399,37.808626069865937,0.0]，-122.419207175169234,37.8078227427288,0.0]，-122.420642521491033,37.8076933698322,0.0]}，{“类型”：“特征”，“属性”：{“地图布卢克洛”：“0010001”，“布卢克洛”：“0010001”，“区块编号”：“0010”，“地块编号”：“001”，“起点编号”：“600”，“终点编号”600”，“街道类型”，“海滩”，“奇数”，“街道编号”，“几何图形”：“：{”类型“：”多边形“，”坐标“：[[[-122.419831772538799,37.807205123871363,0.0]，-122.419834114387342,37.807218024451856,0.0]，-122.419911601942303,37.807596413960987,0.0]，-122.419195209587571,37.80768849444444044,0.0]，-122.419042562933925,37.806943049955677,0.0]，-122.419651565635670,0]，-122.41966464515690.2430,0]，[-122.41966578303186,37.806882315196049,0.0],[-122.419675249958857,37.806892965734285,0.0],[-122.419684481692087,37.806903745368572,0.0],[-122.41969347477874,37.806914652352724,0.0],[-122.419702226784878,37.806925680417926,0.0],[-122.41971073428104,37.806936828718861,0.0],[-122.419718996038398,37.806948093670719,0.0],[-122.419727007398933,37.806959470843303,0.0],[-122.419734768292656,37.806970957534197,0.0],[-122.419742275196839,37.806982549294638,0.0],[-122.419749525770555,37.806994243459279,0.0],[-122.419756518785348,37.807006036443219,0.0],[-122.419763250741596,37.80701792469862,0.0],[-122.41976972038735,37.807029903739888,0.0],[-122.419775925381813,37.807041970901494,0.0],[-122.41978186333769,37.807054121716284,0.0],[-122.419787534184863,37.807066353481837,0.0],[-122.419792934400533,37.807078661749401,0.0],[-122.419798062756087,37.80709104293426,0.0],[-122.419802919134909,37.8071034925322,0.0],[-122.419807500084048,37.807116008797045,0.0],[-122.419811805440261,37.807128585423044,0.0],[-122.4198158339982,37.807141219726184,0.0],[-122.419819582281661,37.807153909059409,0.0],[-122.419823052