How to fix ProcessBar to the top line in Nodejs CLI? - node.js

Question

The terminal out is:
but actually this is what I really want:
progressbar will alway be the fist line,and got a response,then show it at below.
anyway to fix that?
Nodejs:
var request = require('request');
var ProgressBar = require('progress');
var year=[14,15,16];
var month=[1,2,3,4,5,6,7];
var bar = new ProgressBar('Processing [:bar] :percent', {
complete: '=',
incomplete: '-',
width: 30,
total: year.length*month.length,
});
/*-------------------------------------*/
function init(year,month){
check(year,month);
}
function check(year,month){
var options = { method: 'POST',
url: 'http://dev.site/date.php',
formData:{year:year,month:month}
};
request(options, function (error, response, body) {
if (error) {
console.log(error);;
}
if (body=='A task #') {
bar.tick();
console.log('\n'+body+year+':'+month);
}else{
bar.tick();
}
})
}
/*-------------------------------------*/
for (var i = 0; i < year.length; i++) {
for (var n = 0; n < month.length; n++) {
init(year[i],month[n]);
}
}

Answer 1

Using ansi-escapes you may be able to do this.
Here's a standalone version:
const ProgressBar = require('progress');
const ansiEscapes = require('ansi-escapes');
const write = process.stdout.write.bind(process.stdout);
let bar = new ProgressBar('Processing [:bar] :percent', {
complete : '=',
incomplete : '-',
width : 30,
total : 100
});
// Start by clearing the screen and positioning the cursor on the second line
// (because the progress bar will be positioned on the first line)
write(ansiEscapes.clearScreen + ansiEscapes.cursorTo(0, 1));
let i = 0;
setInterval(() => {
// Save cursor position and move it to the top left corner.
write(ansiEscapes.cursorSavePosition + ansiEscapes.cursorTo(0, 0));
// Update the progress bar.
bar.tick();
// Restore the cursor position.
write(ansiEscapes.cursorRestorePosition);
// Write a message every 10 ticks.
if (++i % 10 === 0) {
console.log('Now at', i);
}
// We're done.
if (i === 100) {
process.exit(0);
}
}, 100);