mongoose
1. const mongoose = require("mongoose");導入mongoose模塊
2. //注意url地址最后面的地址是數據庫的名稱
const url = "mongodb://127.0.0.1:27017/bk1824";
3. mongoose.connect(url,(err)=>{
if(err){
console.log("鏈接失敗")
}else{
console.log("鏈接成功")
}
})
4.
//存
const User = mongoose.model("user",{
username:String,
password:String
})
5. //增數據
const user = new User({
username:"zhao1234",
password:"12345"
})
6. //將增加的數據存入數據庫的表中
user.save().then((res)=>{
console.log(res)
})
7. // 刪除數據
User.remove({username:"zhao1234"}).then((res)=>{
console.log(res)
})
8. //改數據
User.update({username:"1111"},{$set:{username:"zhao"}}).then((res)=>{
console.log(res);
})
9.. // 查數據
User.find({username:"zhao"}).then((res)=>{
console.log(res);
})