A beginner's guide to utilizing the fetch API method with the Open Weather API

I'm attempting to integrate the fetch method in order to showcase the latest weather information on a webpage. Despite my efforts, I consistently encounter an error indicating that 'res' is not defined. Can someone advise me on how to resolve this issue?

fetch('https://api.openweathermap.org/data').then(res => {
     return res.json();
}).then(function(myJson) {
     console.log(res.coord);
});

Disclaimer: The API request has been altered for privacy reasons

Answer №1

The issue arises from the usage of different parameter names within your functions. In the first function, you utilize res:

.then(res => { 

However, in the second function, you switch to using myJSON:

.then(function(myJson) {

To resolve this problem, simply update your code as follows:

fetch('https://api.openweathermap.org/data').then(res => {
     return res.json();
}).then(function(res) {
    console.log(res.coord);
});

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