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$ curl repovive.com/roadmaps/javascript/asynchronous-javascript/callback-hell

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$ curl repovive.com/roadmaps/javascript/asynchronous-javascript/callback-hell

Repovive

Callback Hell - Asynchronous JavaScript | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Callback Hell

The problem with nested callbacks

When async operations depend on each other, callbacks nest deeply. This creates "callback hell" or the "pyramid of doom."

getUser(id, (user) => {
  getOrders(user.id, (orders) => {
    getOrderDetails(orders[0].id, (details) => {
      // Deeply nested, hard to read
    });
  });
});

This code is hard to read, maintain, and debug. Promises solve this.