HTTP Methods (GET, POST, PUT, DELETE)

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HTTP Methods

HTTP defines a set of request methods to indicate the desired action to be performed for a given resource. Here, are the most common methods -

S.No.	Method	Description
1	GET	The GET method requests a representation of the specified resource. Requests using GET should only retrieve data and should have no other effect.
2	POST	The POST method requests that the server accept the data enclosed in the request as a new object/entity of the resource identified by the URI.
3	PUT	The PUT method requests that the server accept the data enclosed in the request as a modification to existing object identified by the URI. If it does not exist then the PUT method should create one.
4	DELETE	The DELETE method requests that the server delete the specified resource.

To put it in short…

• Create - POST
• Read - GET
• Update - PUT
• Delete - DELETE

Now consider we are making a student based application then using following statements we will perform different applications -

// Create a new Student
app.post("/api/students", students.create);

// Retrieve all Customer
app.get("/api/students", students.findAll);

// Retrieve a single Student by Id
app.get("/api/students/:id", students.findOne);

// Update a Student with Id
app.put("/api/student/:id", student.update);

// Delete a Student with Id
app.delete("/api/students/:id", student.delete);

Let’s try to build a TODO list application

📁 You can see code in Code Folder. Here’s the link

You can run it by doing -

npm install

node index.js

You can see the output at - http://localhost:3000/