What does resolve mean in js

resolve is a method of the JavaScript Promise object that is used to attach a handler after an asynchronous operation completes successfully. How to use: promise.resolve(value) Pass the success value to the Promise object. When you use resolve to pass a value to a Promise, you can attach a then() handler to handle the successful outcome of the Promise.

resolve in JS

resolve is a method of the Promise object in JavaScript, used when an asynchronous operation has Upon successful completion, attach a handler to the Promise object.

How to use resolve?

The resolve method is used to pass the success value to the Promise object. The syntax is as follows:

<code>promise.resolve(value)</code>

When to use resolve?

The resolve method is used in the following scenarios:

• When an asynchronous operation completes successfully
• When you want to convert a non-Promise value into a Promise value

How to handle Promise

After using the resolve method to pass a value to a Promise, you can attach a handler to handle the successful result of the Promise. This can be done with the then() method:

<code>promise.then((result) => {
  // 成功处理程序，result 为 resolve 传递的值
});</code>

Example

Here is an example using the resolve method:

<code>const promise = new Promise((resolve, reject) => {
  // 异步操作
  setTimeout(() => {
    resolve("操作成功！");
  }, 2000);
});

promise.then((result) => {
  console.log(result); // 输出："操作成功！"
});</code>

In the above example , the resolve method passes the "Operation successful!" string to the Promise object after the asynchronous operation completes successfully (after 2 seconds).

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