What is fetch() in JavaScript?

2026-10-07来源 dev.to JavaScriptEnglish

fetch() is a built-in JavaScript function used to send HTTP requests and get data from a server/API.

It is commonly used to connect a frontend application with a backend or external API.

Flow Chart:

JavaScript
↓
fetch()
↓
API / Server
↓
Response
↓
response.json()
↓
JavaScript Data

Example:

fetch("https://jsonplaceholder.typicode.com/users")
.then(response => response.json())
.then(data => {
console.log(data);
})
.catch(error => {
console.log(error);
});

原文:https://www.a8q9.cn/en/article/what-is-fetch-in-javascript-24ad40.html

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