Working on a project where I call multiple functions featuring setTimeout. In the below code, I can't seem to get my code to run in order. For example, call one function, then the next, then the next. With each waiting for the other to finish.
Feel free to change my code, as I would love to learn more regarding the matter.
**UPDATE
Since it was tough to explain my problem, I figured I'll just post the full code. In the greet page, I ask prompt the user a question using inquirerJS. When I ask the user, my third function fires off, without waiting for the promise to resolve.
TYPE PAGE
module.exports = {
writer: function(phrase, delaySpeed) {
let total = 0;
let empty = [];
let promises = []
for (let i = 0; i < phrase.length; i++) {
total += delaySpeed;
// new promise for each character
let promise = new Promise(function(resolve, reject) {
setTimeout(() => {
empty.push(phrase.charAt(i));
process.stdout.write(chalk.blue.bold(empty[i]));
if (empty.length === phrase.length) { //if complete
process.stdout.write('\n'); //puts on separate line
}
// assuming above writes are synchronous can now resolve promise
resolve()
}, total);
});
// push new promise to array
promises.push(promise)
}
// return the all() promise
return Promise.all(promises)// add another then() if you need to return something to next then() in App()
}
}
GREET PAGE
const inquirer = require('inquirer');
let intro = require('./type.js');
let chalk = require('chalk');
let type = require('./type.js');
let greet = function(){
let questions = [{
type: 'input',
name: 'firstName',
message: 'what your name',
}];
inquirer
.prompt(questions)
.then(answers => {
setTimeout(function(){
type.writer(`Hello ${answers.firstName}`,100);
},500);
}
)
}
module.exports = greet;
MAIN APP PAGE
let initialGreeting = require('./user.js');
function App(){
function second(){
return new Promise(function(resolve,reject){
setTimeout(function a(){
initialGreeting();
resolve();
}, 200);
}
)
function third(){
console.log('finished')
}
type.writer('abc',100).then(second).then(third);
};
App();Return you new Promise:
let greet = function(){
let questions = [{
type: 'input',
name: 'firstName',
message: 'what your name',
}];
inquirer
.prompt(questions)
.then(answers => {
return new Promise(function(resolve,reject) {
setTimeout(function(){
type.writer(`Hello ${answers.firstName}`,100);
resolve();
},500);
}).then(function(){
console.log("run after")
});
}
)
}
module.exports = greet;