I have duplicated error handling code in my Node.js code, how can I make it better to get rid of duplicated code. I specifically want to ask error handling about this callback way, not the Promise way.
var request=require('request');
var URL="http://localhost:3000";
var getRanking=function get_rank(error,response,body){
if(error){
handleError(error);
}else{
if(response.statusCode != 200){
handleError(response);
}
else{
console.log("Response 1 "+body);
request(URL+'/iso/country/'+JSON.parse(body).Country,getISO);
}
}
}
var getISO=function get_iso(error,response,body){
if(error){
handleError(error);
}else{
if(response.statusCode != 200){
handleError(response)
}
else{
console.log("Response 2 "+body);
request(URL+'/olympic/2016/medal/'+JSON.parse(body).iso,getMedalCount);
}
}
}
var getMedalCount=function get_medal_count(error,response,body){
if(error){
handleError(error);
}else{
if(response.statusCode != 200){
handleError(response);
}
else{
console.log("Response 3 "+body);
}
}
}
function handleError(err){
console.log('Error '+JSON.stringify(err))
}
request(URL+'/olympic/2016/ranking/4', getRanking);
via Mahtab Alam
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