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JavaScript та веб-API: інтерактивні завдання для високорівневої інтеграції

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JavaScript та веб-API: інтерактивні завдання для високорівневої інтеграції image

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What is a web API?

A web API, or Application Programming Interface, is a set of rules and protocols that allows different software applications to communicate with each other over the internet.

How can JavaScript be used with web APIs?

JavaScript can be used to interact with web APIs by making requests to remote servers to retrieve or send data. This allows for dynamic and interactive content on websites.

What are some common tasks that web APIs can perform?

Web APIs can perform tasks such as retrieving data from a database, sending emails, processing payments, and integrating with third-party services like social media platforms.

How can you access a web API in JavaScript?

You can access a web API in JavaScript by using the XMLHttpRequest object or the fetch API to make HTTP requests to the API endpoint and then process the response.

What is JSON and why is it commonly used with web APIs?

JSON, or JavaScript Object Notation, is a lightweight data interchange format that is commonly used with web APIs because it is easy to read and write, and can be easily converted to JavaScript objects.

Can you explain the same-origin policy in relation to web APIs?

The same-origin policy is a security measure implemented by browsers that restricts web pages from making requests to a different domain than the one the page was served from. This policy helps prevent cross-site scripting attacks.

What are CORS policies and how do they relate to web APIs?

CORS (Cross-Origin Resource Sharing) policies are a set of rules that allow servers to specify who can access their resources. When working with web APIs, CORS policies need to be correctly configured to allow requests from different origins.

What is an asynchronous request in JavaScript and why is it important when working with web APIs?

An asynchronous request in JavaScript allows code to continue executing while waiting for a response from a web API. This is important when working with web APIs to ensure that the webpage remains responsive and does not freeze while waiting for data.

How can you handle errors when making requests to a web API?

You can handle errors when making requests to a web API by using try-catch blocks to catch any exceptions that occur during the request process. You can then display an error message to the user or implement fallback logic to handle the error gracefully.

Can you give an example of integrating a web API into a web page using JavaScript?

Sure! An example could be using the OpenWeather API to display the current weather in a specific location on a webpage. You would make a request to the API endpoint, retrieve the weather data, and then display it dynamically on the webpage using JavaScript.
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