db.mycollection.find ()
{"_ id": ObjectId ("5be2c9ebda9c816c79d9b531"), "name": "alex", "id": "888", "url": ["www.baidu.com", "www.souhu.com"]}
for example, how can I check the current url situation? Several url
db.mycollection.find ()
{"_ id": ObjectId ("5be2c9ebda9c816c79d9b531"), "name": "alex", "id": "888", "url": ["www.baidu.com", "www.souhu.com"]}
for example, how can I check the current url situation? Several url
this is all obtained through url.length after finding mycollection data
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