I'm very new to nodejs. I've been following a udemy instructor and after copying and understanding what he demonstrated, my compiler gives me an 'ERR_INVALID_CALLBACK' error. Please help me understand. Thank you!
const fs = require('fs');
if(!fs.exists("views")){
fs.mkdir("views", (err)=>{
if(err) return err;
fs.writeFile("./views/new.html", 'this is a new dir and data', (err)=>{
if (err) return err;
console.log('Directory and File saved!')
})
})
}
Just like fs.mkdir
and fs.writeFile
, the methodfs.exists
is async and expects a callback. If you want to "wait" for it to finish, use fs.existsSync()
:
const fs = require('fs');
if(!fs.existsSync("views")){
fs.mkdir("views", (err)=>{
if(err) return err;
fs.writeFile("./views/new.html", 'this is a new dir and data', (err)=>{
if (err) return err;
console.log('Directory and File saved!')
})
})
}
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