Deno Besic Tutorial For Beginner - JavaScript Runtime Environment

Referance code

import React from 'react';

// SIMPLE SERVER



/* import {serve} from 'https://deno.land/std/http/server.ts';



const address = "127.0.0.1:8000" ;



console.log(`Simple server is running on ${address}`);



for await (const req of serve(address)){

    req.respond({});

}

*/











/*

// https://deno.land/manual/runtime/program_lifecycle

// Deno supports browser compatible lifecycle events

window.onload = (event: Event ): void =>{

    console.log("window is on load and event type is = " + event.type); 

}

*/







/*

import {currentDayOfYear} from "https://deno.land/std/datetime/mod.ts";



console.log(currentDayOfYear());

*/















/*

// https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.version

// CHECK VERSION

console.log(Deno.version);

*/









/*

// MAKE DIRECTORY

// https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.mkdir

await Deno.mkdir("new folder");

*/

















/*

// WRITE FILE INSIDE OUR DIR

// https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.writeFile

const encoder = new TextEncoder();

const data = encoder.encode("Hello world\n");

Deno.writeFile("new\ folder/hello1.txt", data);  // overwrite "hello1.txt" or create it

*/













/*

// READ FILE

// https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.readFile

const decoder = new TextDecoder('utf-8');

const data = await Deno.readFile('./new\ folder/hello1.txt');

console.log(decoder.decode(data));

*/













/*

// ASSERTION

import {assertEquals} from "https://deno.land/std/testing/asserts.ts";



Deno.test("Hello World", ()=>{

    let x = 2+5;

    assertEquals(x, 7, "Assert test")

});

*/