JS Callback and JS Promise

JS Callback

function adimiYaz(ad){console.log("Gamze");}

function soyadimiYaz(ad){console.log("Sen");}

function adimiYaz(ad){console.log(ad);}

function soyadimiYaz(soyad){console.log(soyad);}

adimiYaz("gamze");

gamze

adimiYaz("gamze"); soyadimiYaz("sen");

gamze

sen

function adimiYaz(ad){ setTimeout(function(){ console.log(ad);}, 2000);}

function soyadimiYaz(soyad){setTimeout(function(){console.log(soyad);}, 1000);}

adimiYaz("gamze"); soyadimiYaz("sen");

 sen

gamze

function adimiYaz(ad){ setTimeout(function(){ console.log(ad);}, 4000);}

function soyadimiYaz(soyad){setTimeout(function(){console.log(soyad);}, 1000);}

adimiYaz("gamze"); soyadimiYaz("sen");

 sen

gamze

function adimiYaz(ad, callback){ setTimeout(function(){ console.log(ad); callback("sen"); }, 4000);}

function soyadimiYaz(soyad){setTimeout(function(){console.log(soyad);}, 1000);}

adimiYaz("Gamze", soyadimiYaz);

 Gamze

sen

 JS Promise

 let sonuc = false;

let islem = new Promise(function(resolve, reject){

                if(sonuc){

               resolve("Basarili");

  }else{

               reject("Hatali");

  }

});

islem.then(function(data){

                console.log(data);

}).catch(function(data){

                console.log(data);

});

Hatali

 let req1 = new Promise(function(resolve, reject){

                setTimeout(function(){

               resolve("First");

  }  ,2000);

});

let req2 = new Promise(function(resolve, reject){

                setTimeout(function(){

               reject("Second");

  } , 3000);

});

Promise.all([req1, req2]).then(function(results){

                console.log("Then: ", results);

}).catch(function(err){

                console.log("Catch: ", err);

});

 Catch:  Second

 let req3 = new Promise(function(resolve, reject){

                setTimeout(function(){

               resolve("First");

  }  ,2000);

});

let req4 = new Promise(function(resolve, reject){

                setTimeout(function(){

               reject("Second");

  } , 3000);

});

Promise.race([req3, req4]).then(function(results){

                console.log("Then: ", results);

}).catch(function(err){

                console.log("Catch: ", err);

});

Then:  First

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