what values can we send in Promise.resolve and Promise.reject code example
Example 1: promise resolve reject
function testFunction(value) {
return new Promise(function (resoleve, reject) {
setTimeout(function () {
let n = value;
if (n < 100) {
resoleve("範囲内");
} else {
reject("範囲外");
}
}, 2000);
})
}
testFunction(10)
.then(function (value) {
console.log(value);
return testFunction(50);
})
.then(function (value) {
console.log(value);
return testFunction(150);
})
.catch(function (error) {
console.log(`エラーです。${error}`);
})
Example 2: promise resolve reject
function testFunction() {
return new Promise(function (resolve, reject) {
setTimeout(function () {
resolve('hello!');
}, 1000);
})
}
testFunction()
.then(function (value) {
console.log(value);
})
.catch(function (error) {
console.log(error);
})