我正在使用 firefox 控制台，我想查看一个对象的内容。
我首先在对象上调用了 JSON.stringify(object) 但得到了 TypeError: cyclic object value 错误。
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对象的一部分，但在底部我得到了一条消息:
您尝试查看的字符串太长，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);
哪个返回了
console.log(myFunction()); 不明确的 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
最佳答案
您可以将结果添加到当前页面 ex 的某处。像这样，然后根据需要复制/粘贴:
var jsonStr = JSON.stringify(biggerInlinedJson(), null, 2);
console.log(jsonStr);
/*
document.body.innerText = jsonStr;
/*/
var el = document.createElement("TEXTAREA");
el.innerText = jsonStr;
document.body.appendChild(el);
el = document.createElement("PRE");
el.innerText = jsonStr;
document.body.appendChild(el);
//*/
function biggerInlinedJson() {
// small part of https://github.com/zemirco/sf-city-lots-json/blob/master/citylots.json
return {"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,"ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.422003528252475,37.808480096967251,0.0],[-122.422076013325281,37.808835019815085,0.0],[-122.421102174348633,37.808803534992904,0.0],[-122.421062569067274,37.808601056818148,0.0],[-122.422003528252475,37.808480096967251,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0002001","BLKLOT": "0002001","BLOCK_NUM": "0002","LOT_NUM": "001","FROM_ST": "0","TO_ST": "0","STREET": "UNKNOWN","ST_TYPE": null,"ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.42082593937107,37.808631474146033,0.0],[-122.420858049679694,37.808795641369592,0.0],[-122.419811958704301,37.808761809714007,0.0],[-122.42082593937107,37.808631474146033,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0004002","BLKLOT": "0004002","BLOCK_NUM": "0004","LOT_NUM": "002","FROM_ST": "0","TO_ST": "0","STREET": "UNKNOWN","ST_TYPE": null,"ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.415701204606876,37.808327252671461,0.0],[-122.415760743593196,37.808630700240904,0.0],[-122.413787891332404,37.808566801319841,0.0],[-122.415701204606876,37.808327252671461,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0005001","BLKLOT": "0005001","BLOCK_NUM": "0005","LOT_NUM": "001","FROM_ST": "206","TO_ST": "286","STREET": "JEFFERSON","ST_TYPE": "ST","ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.417346670944355,37.808121127609709,0.0],[-122.417457443198046,37.808685627252729,0.0],[-122.416003128921787,37.808638547938997,0.0],[-122.41593547450509,37.808293744156337,0.0],[-122.417346670944355,37.808121127609709,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0006001","BLKLOT": "0006001","BLOCK_NUM": "0006","LOT_NUM": "001","FROM_ST": "350","TO_ST": "366","STREET": "JEFFERSON","ST_TYPE": "ST","ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.418974650424474,37.807907564012595,0.0],[-122.419147512636712,37.808655940108665,0.0],[-122.418623049836171,37.808723347475208,0.0],[-122.417699830020709,37.808693471445764,0.0],[-122.417580761531511,37.808086708494429,0.0],[-122.418974650424474,37.807907564012595,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0007001","BLKLOT": "0007001","BLOCK_NUM": "0007","LOT_NUM": "001","FROM_ST": "2936","TO_ST": "2936","STREET": "HYDE","ST_TYPE": "ST","ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": [[[-122.420642521491033,37.807693733698322,0.0],[-122.420789444036856,37.808444893986632,0.0],[-122.419379916821399,37.808626069865937,0.0],[-122.419207175169234,37.807878227427288,0.0],[-122.420642521491033,37.807693733698322,0.0]]]}},{"type": "Feature","properties": {"MAPBLKLOT": "0010001","BLKLOT": "0010001","BLOCK_NUM": "0010","LOT_NUM": "001","FROM_ST": "600","TO_ST": "600","STREET": "BEACH","ST_TYPE": "ST","ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": 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"Feature","properties": {"MAPBLKLOT": "0010002","BLKLOT": "0010002","BLOCK_NUM": "0010","LOT_NUM": "002","FROM_ST": "680","TO_ST": "680","STREET": "BEACH","ST_TYPE": "ST","ODD_EVEN": "E"},"geometry": {"type": "Polygon","coordinates": 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}关于javascript - 如何从控制台查看或输出很长的字符串，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28148588/