simple node api

index.js

const express = require('express');
const app = express();
app.use(express.json);

const PORT = process.env.PORT || 8000;
app.listen(PORT, ()=>{
    console.log(`[Server Started] Server is running on ${PORT}`);
});

const arr=[
    {id:1,name:"Money Hesit",rating:"5.0"},
    {id:2,name:"Black Clover",rating:"4.5"},
    {id:3,name:"Jujutsu Kaisen",rating:"4.8"},
    {id:4,name:"Honey and Clover",rating:"3.8"},
    {id:5,name:"Tokyo Revengers",rating:"5.0"}
];
app.get("/",(req,res)=>{
    res.send("API is working");
});
app.get("/titles",(req,res)=>{
    res.send(arr);
});

app.post("/titles",(req,res)=>{
    arr.push(req.body);
    res.send("Title Added");
});

app.put("/titles/:id",(req,res)=>{
    const {id}=req.params;
    const {name}=req.body;
    let obj = arr.find((e)=>{e.id == 'id'});
    if(obj == null){
        res.status(404).send("Item does not exist in the database.");
    }else{
        arr[id-1].name = name;
        res.send("Item modified.")
    }

});
app.put("/ratings/:id",(req,res)=>{
    const {id}=req.params;
    const {rating}=req.body;
    let obj = arr.find((e)=>{e.id == 'id'});
    if(obj == null){
        res.status(404).send("Item does not exist in the database.");
    }else{
        arr[id-1].rating = rating;
        res.send("Item modified.")
    }

});
app.delete("/titles/:id",(req,res)=>{
    const {id}=req.params;
    let obj = arr.find((e,index)=>{e.id == 'id'});
    if(obj == null){
        res.status(404).send("Item does not exist in the database.");
    }else{
        let index = arr.indexOf(obj);
        removed_object = arr.splice(index,1);
        res.send(removed_object);
    }

});