Just need to set projectName as a state variable and make and resolve the promise in the componentDidMount on the first render it will equal an empty string, once it comes back it will update to whatever the api returns.

First we’re waiting for the first call to be resolved, then we start the second. I want to start both first, then I want to wait until both finished. Not a millisecond more. Once this is resolved, we can access the first call value using data[0] and the second call return value with data[1] .

Resolving a promise

1. We check if the result is a promise or not. If it’s a function, then call that function with value using doResolve() .
2. If the result is a promise then it will be pushed to the deferreds array. You can find this logic in the finale function.

Promise resolve() method:

1. If the value is a promise then promise is returned.
2. If the value has a “then” attached to the promise, then the returned promise will follow that “then” to till the final state.
3. The promise fulfilled with its value will be returned.

allSettled() Since ES2020 you can use Promise. allSettled . It returns a promise that always resolves after all of the given promises have either fulfilled or rejected, with an array of objects that each describes the outcome of each promise.

all: It resolves only when all promises passed to it ( as an array) resolves else it will reject with the first rejected promise error. Promise. allSettled: This one will always get resolved with an array having info about resolved and rejected promises.

Finally, to answer your question, Promise. all will not execute neither in parallel or sequentially but concurrently.

The Promise. all() method takes an iterable of promises as an input, and returns a single Promise that resolves to an array of the results of the input promises. This returned promise will resolve when all of the input’s promises have resolved, or if the input iterable contains no promises.

One interesting thing about Promise. all is that the order of the promises is maintained. The first promise in the array will get resolved to the first element of the output array, the second promise will be a second element in the output array and so on.

Promises. JavaScript is single-threaded, which means that we can only run one block of code at a time. It executes code in order and must finish executing code before running the next one.

The await statement operates on a Promise , waiting until the Promise resolve s or reject s. log on the result of an async function directly, even if you use await . Using await will make your function wait and then return a Promise which resolves immediately, but it won’t unwrap the Promise for you.

If you use the async keyword before a function definition, you can then use await within the function. When you await a promise, the function is paused in a non-blocking way until the promise settles. If the promise fulfills, you get the value back. If the promise rejects, the rejected value is thrown.

The ESLint rule no-return-await disallows the use of return await inside an async function. It says: Since the return value of an async function is always wrapped in Promise. resolve , return await doesn’t actually do anything except add extra time before the overarching Promise resolves or rejects.

First, async/await makes the asynchronous code appear and behave like synchronous code. Just like Promises themselves, async/await is equally non-blocking. The purpose of async/await functions is to simplify the behavior of using Promises synchronously and to perform some behavior on a group of Promises .

await only blocks the code execution within the async function. It only makes sure that the next line is executed when the promise resolves. So, if an asynchronous activity has already started, await will not have an effect on it.

The superiority of promises over callbacks is all about trust and control. Let me explain. I once compared giving an asynchronous worker a callback function to giving a barista in a coffee shop your name to have it called when your order is ready.

To recap inside a function marked as async, you are allowed to place the await keyword in front of an expression that returns a promise. When you do, the execution of the async function is paused until the promise is resolved.

Using Promises Note: Promises are asynchronous. Promises in functions are placed in a micro-task queue and run when other synchronous operations complete.

In this way, an async function without an await expression will run synchronously. If there is an await expression inside the function body, however, the async function will always complete asynchronously. Code after each await expression can be thought of as existing in a .then callback.

1 : not simultaneous or concurrent in time : not synchronous asynchronous sound.

Synchronous learning is learning that happens at the same time for the instructor and the learners, meaning that there’s real-time interaction between them. Synchronous = happens at the same time. Asynchronous = doesn’t happen at the same time. With synchronous learning, participants can receive immediate feedback.

While many students and professors have a shared love for a synchronous approach due to the elements of motivation and interaction, the same synchronous classes can feel asynchronous if the students prefer to have their videos off on Zoom.

Synchronous communications are two-way communications in which participants can converse with each other in real-time. Examples of synchronous digital communications: Virtual meetings over Zoom, WebEx, and other telecommunications platforms. Live online classes via video conferencing technology.

Zoom is screen time and too much screen time is unhealthy All of the reasons too much screen time is unhealthy for kids are the same reasons kids shouldn’t be on Zoom all day for school: increased rates of obesity, sleep disturbance, and behavioral problems.

Synchronous communication happens when messages can only be exchanged in real time. Examples of synchronous communication are phone calls or video meetings. Asynchronous communication happens when information can be exchanged independent of time.