CODEWITHSUNDEEP
node.js
Wayne Li
Wayne Li

Reputation: 421

Why nodejs restarts every time I refresh the page on the client side

I am new to nodejs and did some test on my nodejs app. The code is basically like this.

import express from 'express';

import jsonfile from "jsonfile";

const app = express();

const PORT = process.env.PORT || 3002;
let global=0;
app.use(express.static(`${__dirname}/assets`));
app.use((req, res, next) => {
  //write file
  const file = '/path/data.json';

  var obj = {
    name:'cd'
  };
  jsonfile.writeFile(file,obj,{spaces: 2}, (err)=>{
    console.error(err);
  })
  next();
})

app.get('/test', (req, res, next) => {
  global++
  res.send(''+global);
})
app.listen(PORT, () => {
  console.log(`App listening on port ${PORT}!`);
});

I built it on localhost, and input http://localhost:3002/test into the browser. The app will send the global counter to the browser, but if I refresh the page, I found my nodejs app restart and the counter doesn't change. If I comment out the jsonfile.writeFile part and do the same process like before, the nodejs app won't restart and the counter will increase every time I refresh the page. Why is that?

Upvotes: 1

Views: 1452

Answers (1)

David R
David R

Reputation: 15639

As you've commented the nodemon forces the page reload (live reload) to enable you to see the changes instantly.

Use node <your_script_name.js> or node <any_command_defined_in_scripts> (whatever is applicable) instead of nodemon if you don't want auto-refresh every time when you refresh the page.

Hope this helps!

Upvotes: 2

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