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45 lines (40 loc) · 1.13 KB
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promise.js
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45 lines (40 loc) · 1.13 KB
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// function getTempCallback (location, callback){
// callback(undefined, 78);
// callback('City not found');
// }
// getTempCallback('Philadelphia', function(err, temp){
// if(err){
// console.log(err);
// } else {
// console.log('success', temp);
// }
// });
// function getTempPromise (location){
// return new Promise (function(resolve, reject){
// setTimeout (function(){
// resolve(79);
// reject('City not found');
// }, 1000);
// });
// }
// getTempPromise('Philadelphia').then(function(temp){
// console.log('promise success', temp);
// }, function (err){
// console.log('error', err);
// });
function addPromise(a,b) {
return new Promise ( function (resolve, reject){
setTimeout(function(){
if (typeof a === 'number' && typeof b === 'number'){
resolve(a+b);
} else {
reject('Inputs are not numbers');
}
}, 1000);
});
}
addPromise (12,'N').then(function(addition){
console.log('Success', addition);
}, function(err){
console.log('error', err);
});