How to Send a HTTP Post Request in JavaScript

Sending an HTTP POST request in JavaScript can be achieved through various methods. One approach is to utilize the XMLHttpRequest object. To do so, start by creating a new XMLHttpRequest object. Set the request method to "POST" and the URL to the resource where you intend to post data. Following that, define the request headers, with "Content-Type" being a common header, specifying the type of data being posted, such as "application/json". Subsequently, set the request body, representing the data to be sent to the server. In the case of JSON data, the request body would be the JSON object. Once all the request properties are configured, invoke the "send()" method to dispatch the request.

Alternatively, a more contemporary method for sending an HTTP POST request in JavaScript is through the Fetch API, which is supported by most modern browsers. To use the Fetch API, initiate the process by calling the "fetch()" function. The first argument is the URL of the resource for posting data. The second argument is an object containing request options. Set the request method to "POST", the "Content-Type" header to "application/json", and define the request body as the JSON object to be sent. After configuring all the request options, invoke the "fetch()" function to transmit the request.

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