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Let us create a collection with documents −> db.demo575.insertOne({id:101, Information:{Name:"Chris", Age:21}});{ "acknowledged" : true, "insertedId" : ObjectId("5e916a55581e9acd78b427f7") } > db.demo575.insertOne({id:102, Information:{Name:"David", Age:20}});{ "acknowledged" : true, "insertedId" : ObjectId("5e916a5f581e9acd78b427f8") } > db.demo575.insertOne({id:101, Information:{Name:"Bob", Age:23}});{ "acknowledged" : true, "insertedId" : ObjectId("5e916a67581e9acd78b427f9") }Display all documents from a collection with the help of find() method −> db.demo575.find();This will produce the following output −{ "_id" : ObjectId("5e916a55581e9acd78b427f7"), "id" : 101, "Information" : { "Name" : "Chris", "Age" : 21 } } { "_id" : ObjectId("5e916a5f581e9acd78b427f8"), "id" : 102, "Information" : { "Name" : "David", "Age" : 20 } } { "_id" ... Read More
To match all the values in MongoDB, use $match along with $and in Aggregation. Let us create a collection with documents −> db.demo574.insertOne( ... { ... "details1": { ... "details2": { ... "dueDate": new ISODate("2020-01-10"), ... "Name": "Chris", ... ... "UserInformation": { ... "Name": "John", ... "Marks": 78 ... }, ... ... Read More
For this, use $push along with update. Let us create a collection with documents −> db.demo573.insertOne( ... { ... '_id' :101, ... 'SearchInformation' : [ ... { ... 'Site' : 'Facebook.com', ... 'NumberOfHits' : 100 ... }, ... { ... 'Site' : 'Twitter.com', ... 'NumberOfHits' : 300 ... } ... ... Read More
For case, insensitive search, use regex in find() method. Following is the syntax −db.demo572.find({"yourFieldName" : { '$regex':/^yourValue$/i}});To understand the above syntax, let us create a collection with documents −> db.demo572.insertOne({"CountryName":"US"});{ "acknowledged" : true, "insertedId" : ObjectId("5e915f0e581e9acd78b427f1") } > db.demo572.insertOne({"CountryName":"UK"});{ "acknowledged" : true, "insertedId" : ObjectId("5e915f17581e9acd78b427f2") } > db.demo572.insertOne({"CountryName":"Us"});{ "acknowledged" : true, "insertedId" : ObjectId("5e915f1b581e9acd78b427f3") } > db.demo572.insertOne({"CountryName":"AUS"});{ "acknowledged" : true, "insertedId" : ObjectId("5e915f20581e9acd78b427f4") } > db.demo572.insertOne({"CountryName":"us"});{ "acknowledged" : true, "insertedId" : ObjectId("5e915f25581e9acd78b427f5") }Display all documents from a collection with the help of find() method −> db.demo572.find();This will produce the following output −{ "_id" : ObjectId("5e915f0e581e9acd78b427f1"), ... Read More
To find values above a specific value, the following is the syntax using $gte in MongoDB −db.yourCollectionName.find({yourFieldName:{$gte:yourValue}});Let us create a collection with documents −> db.demo571.insertOne({"Price":140});{ "acknowledged" : true, "insertedId" : ObjectId("5e909b3439cfeaaf0b97b587") } > db.demo571.insertOne({"Price":100});{ "acknowledged" : true, "insertedId" : ObjectId("5e909b3639cfeaaf0b97b588") } > db.demo571.insertOne({"Price":110});{ "acknowledged" : true, "insertedId" : ObjectId("5e909b3839cfeaaf0b97b589") } > db.demo571.insertOne({"Price":240});{ "acknowledged" : true, "insertedId" : ObjectId("5e909b3c39cfeaaf0b97b58a") }Display all documents from a collection with the help of find() method −> db.demo571.find();This will produce the following output −{ "_id" : ObjectId("5e909b3439cfeaaf0b97b587"), "Price" : 140 } { "_id" : ObjectId("5e909b3639cfeaaf0b97b588"), "Price" : 100 } { "_id" : ... Read More
If you want to set a hint for text area or input field, then use the HTML placeholder attribute. The hint is the expected value, which gets displayed before the user enters a value, for example, name, details, etc.ExampleYou can try to run the following code to learn how to use placeholder attribute in HTML. Register
HTML5 Geolocation API lets you share your location with your favorite websites. A Javascript can capture your latitude and longitude and can be sent to backend web server and do fancy location-aware things like finding local businesses or showing your location on a map. The geolocation coordinates specifies the geographic location of the device.Geolocation methods getCurrentPosition() and getPositionUsingMethodName() specify the callback method that retrieves the location information. These methods are called asynchronously to an object Position which stores the complete location information.The Position object specifies the current geographic location of the device. The location is expressed as a set of ... Read More
The formmethod attribute is used to define the HTTP technique for sending form information. This method is usedwith input type submit a picture. It overrides the method attribute of HTML forms.ExampleYou can try to run the following code to learn how to use the formmethod attribute in HTML. HTML formmethod attribute Student Name Student Subject
For this, use aggregate() in MongoDB. Let us create a collection with documents −> db.demo718.insertOne( ... { ... "id":101, ... "details": ... { ... "OtherDetails": ["Chris", "Mike", "Sam"], "GroupName": ["Group-1"], "Info": [] ... } ... } ... ); { "acknowledged" : true, "insertedId" : ObjectId("5eaae25843417811278f5880") } > db.demo718.insertOne( ... { ... "id":102, ... "details": ... { ... "OtherDetails": ["Chris", "David"], "GroupName": ["Group-1"], "Info": [] ... ... Read More
For aggregation, use aggregate() in MongoDB. Group the dates with $group. Let us create a collection with documents −> db.demo717.insertOne( ... { ... "shippingdetails": ... [ ... { ... duedate:"2020-04-29 22:33:04", ... }, ... { ... duedate:"2020-03-29 22:33:04", ... }, ... { ... duedate:"2020-04-29 22:33:04", ... }, ... ... Read More