Async/await in JavaScript : asynchronous behaviour of Javascript Part -4

For part 1, part 2 and part 3 of this series, see the following links https://truetocode.com/understanding-callbacks-and-callback-hell-in-javascript-asynchronous-behavior-of-javascript-part-1/697/ https://truetocode.com/understanding-promises-in-javascript-asynchronous-behavior-of-javascript-part-2/730/ https://truetocode.com/generator-functions-in-javascript-asynchronous-behavior-of-javascript-part-3/744/ In the previous three articles in this series, we learned about doing asynchronous operations with callbacks, promises, and generator functions. In ES8 or ES2017 , Javascript introduced a new kind of syntax called async/await, which makes it easier to do asynchronous operations. Async/await syntax is actually just syntactic sugar over promises and callbacks The following example shows the basic syntax for performing async/await operations. Here too, we use fetch function which returns a promise. Remember that this block of code is run on chrome 60. Earlier versions of Chrome do not support async/ await. fetch()  and  json() returns promise

Now using async/await

Both will produce output like  the following The fetch() here returns a promise so we await for fetch. The json() function also returns a promise so we await for that too. Here we can see that using the async/await made the code easier to read and understand. As you can see that async/await helps you to write code in a way that asynchronous code looks and behave a  more like synchronous code. On each await keyword, the function pauses as you can see in the below…

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