test.js
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const fetch = require('node-fetch');
var fs = require('fs');
fs.readFile('coin_name.txt', 'utf8', function(err,data){
arr = data.split(",");
// console.log(arr);
var responseList = new Array();
function print_coin(){
var promise = new Promise(function(resolve,reject){
for(i=0;i<10;i++){
(function(i){
setTimeout(function(){
const url = 'https://api.upbit.com/v1/candles/minutes/1?market='+arr[i]+'&count=1';
const options = {method: 'GET', headers: {Accept: 'application/json'}};
var coinJson = new Object();
fetch(url, options)
.then(res => res.json())
.then(json => {
coinJson.coin = arr[i];
coinJson.price = json[0].trade_price;
responseList.push(coinJson);
//console.log(responseList)
if(i>8){
resolve(responseList);
}
})
.catch(err => console.error('error:' + err));
},i*180);
})(i);
}
});
return promise;
}
print_coin().then(function(resList){
console.log(resList);
});
})