This content originally appeared on DEV Community and was authored by Heru Hartanto
An (IIFE) Immediately Invoked Function Expression is a function that executed as soon as it’s defined.
It’s a common design pattern that helps create a private scope and avoiding polluting the global scope.
(function () {
// Code inside IIFE
})();
The function declare inside parentheses and trailing () immediately invoke it.
This can be useful when you need to fetch data immediately after the page loads, here the example:
(async function () {
try {
let response = await fetch("https://jsonplaceholder.typicode.com/posts");
let data = await response.json();
console.log(data);
} catch (error) {
console.error("Error fetching data:", error);
}
})();
This content originally appeared on DEV Community and was authored by Heru Hartanto
Heru Hartanto | Sciencx (2024-10-13T03:39:38+00:00) What is an IIFE (Immediately Invoked Function Expression) and Why Should You Care?. Retrieved from https://www.scien.cx/2024/10/13/what-is-an-iife-immediately-invoked-function-expression-and-why-should-you-care/
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