PRoMises chaining
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1 min read
const wait = function (second) {
return new Promise(function (resolve) {
setTimeout(resolve("WHo??"), second * 1000);
});
};
wait(1)
.then((r) => {
console.log("I am a first call");
console.log(r);
return wait(3);
})
.then((r) => {
console.log("I am a second call?");
console.log(r);
return wait(3);
})
.then((r) => {
console.log("I am a third call");
console.log(r);
return wait(3);
})
.then((r) => {
console.log("I am a fourth call");
console.log(r);
});
new Promise(function (resolve, reject) {
if (Math.random > 0.5) {
resolve("I am a conqueror");
} else {
reject("I AM A EVIL");
}
})
.then((res) => {
console.log(res);
})
.catch((er) => {
console.error(er);
});
guess? the output of the code …….
output is————————→
I am a first call
WHo??
I AM A EVIL
I am a second call?
WHo??
I am a third call
WHo??
I am a fourth call
WHo??
THiNK? why
0
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