如何从字符串中删除动态声部？

Question

您好我是新人请放纵:)

我正在做一个带有很多动态值的标签生成器，这是最终的输出：

1554710490545：[B @ 773c0cef：{“ header”：{“ eventId”：“ c0afad22-6472-4f23-9a5d-1c5e0b48024e ”，“ tmst”：“ 1554710490545 ”，“ agencyId”：“ tazz ”，“ customerId”：“ 02c “，” type“：” EzNavigationHitPayload“}，” trackingEzNavHit“：{” hitBase“：{” hitId“：” 8735b582-2be7-4764-ac83-da0e4d2206df “，” ezakusBid“：” a40afeb4-066f-4dc8-9de6 -e450facecee9 “，” tmst“：” 1554710490545 “，” wid“：” widtest “，” cookieOk“：true，” userAgent“：”Mozilla / 5.0（Windows NT 10.0; Win64; x64）AppleWebKit / 537.36（KHTML，例如Gecko）Chrome / 73.0.3683.86 Safari / 537.36“，” ipV4“：” 77.154.199.100 “，” ezCustom“：{” eznode“： ”gfnode-001 “，”版本“：” 4.0.10 “}，” agencyId“：” tazz “，” customerId“：” 02c “}，” ezVarious“：{ ” ignore“：” STRING_TO_CHECK“ }}}

我只想保留这部分：

{“ hitId”：“ 8735b582-2be7-4764-ac83-da0e4d2206df”，“ ezakusBid”：“ a40afeb4-066f-4dc8-9de6-e450facecee9”，“ tmst”：“ 1554710490545”，“ wid”：“ widtest”，“ cookieOk“：true，” userAgent“：” Mozilla / 5.0（Windows NT 10.0; Win64; x64）AppleWebKit / 537.36（KHTML，like Gecko）Chrome / 73.0.3683.86 Safari / 537.36“，” ipV4“：” 77.154.199.100“ ，“ ezCustom”：{“ eznode”：“ gfnode-001”，“ version”：“ 4.0.10”}，“ agencyId”：“ tazz”，“ customerId”：“ 02c”}，“ ezVarious”：{“忽略“：” STRING_TO_CHECK“}}}

所有以粗体显示的值都是动态生成的，并且每次都会更改。我尝试使用正则表达式，但似乎很困难

Answer 1

从第一个花括号开始{，所有内容似乎都是JSON。所以你可以使用之后获取字符串let str = `1554710490545:[B@773c0cef:{"header":{"eventId":"c0afad22-6472-4f23-9a5d-1c5e0b48024e", "tmst":"1554710490545","agencyId":"tazz","customerId":"02c", "type":"EzNavigationHitPayload"},"trackingEzNavHit": {"hitBase":{"hitId":"8735b582-2be7-4764-ac83-da0e4d2206df", "ezakusBid":"a40afeb4-066f-4dc8-9de6-e450facecee9","tmst":"1554710490545", "wid":"widtest","cookieOk":true, "userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36","ipV4":"77.154.199.100","ezCustom": {"eznode":"gfnode-001","version":"4.0.10"},"agencyId":"tazz","customerId":"02c"}, "ezVarious":{"ignore":"STRING_TO_CHECK"}}}`;let x = str.match(/({.*})/);console.log(JSON.parse(x[1]).trackingEzNavHit)

Answer 2

这是json数据。因此，您可以根据需要通过键访问值。例如，首先取空白json let output={} output["hintId"]= data.hintId output["ezakusBid"] = data.ezakusBidAnd you can create new json data as your wish

Answer 3

如果您可以访问JSON，请使用它，而不是解析字符串...trackingEzNavHit.hitBase如果首键有时会不同，这是一种动态访问的方法。const json = {  "1554710490545": {    "B@773c0cef": {      "header": {        "eventId": "c0afad22-6472-4f23-9a5d-1c5e0b48024e",        "tmst": "1554710490545",        "agencyId": "tazz",        "customerId": "02c",        "type": "EzNavigationHitPayload"      },      "trackingEzNavHit": {        "hitBase": {          "hitId": "8735b582-2be7-4764-ac83-da0e4d2206df",          "ezakusBid": "a40afeb4-066f-4dc8-9de6-e450facecee9",          "tmst": "1554710490545",          "wid": "widtest",          "cookieOk": true,          "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36",          "ipV4": "77.154.199.100",          "ezCustom": {            "eznode": "gfnode-001",            "version": "4.0.10"          },          "agencyId": "tazz",          "customerId": "02c"        },        "ezVarious": {          "ignore":"STRING_TO_CHECK"        }      }    }  }};console.log(json[Object.keys(json)[0]][Object.keys(json[Object.keys(json)[0]])].trackingEzNavHit.hitBase);