How to add Jquery in angular 5

Commands :
npm install jquery --save
import * as $ from 'jquery';
Code:
ngOnInit()
{
$(document).ready(function(){
$('#btn1').click(function(){

alert('Button is clicked');
})

});

My Youtube gears:

[ajayvishwakarma]

Bhai youtube pe yogesh sharma channel dekhte hi dil khush ho jata hain.

[gopalbadeti]

Thanx for making this video.. If I have variable let say var amount =100; in jquery script. How can I use pass this amount varialble/value to angular service .ts method from angular component... ?

[syedakhil]

hello sir, angular-cli.json file kaha se aayi aur kaha hai is module project me...

[vishalrathore]

have you created angular 4 Project Please share link

[RajeevKumar-jtvl]

really awesome explaning sir pls make video angular 2, 4, 5 login, register, forget password sir pls make....