The second parameter is used to define the body (data to be sent) and type of request to be sent, while the third parameter is the header that specifies the type of data you will send, for example JSON. Take a look at this. How to read a local text file using JavaScript? This is null if the request is not complete or was not successful. Modern Javascript provides a number of ways to send HTTP requests to remote servers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. (image/gif, image/jpg, image/png ..etc.). Relatively a new package compared to other mature, versatile options discussed in this post. Ms. Kajal : +91 8828484265 JavaScript Foundation; Web Development. Content available under a Creative Commons license. You might now begin to think which method should I use? How to check whether a string contains a substring in JavaScript? You will need a png decoding library for that. How to remove a character from string in JavaScript ? To send an image we need to make a post request to the server and upload the image firstly by converting it into DATAURL format. How to send button value to PHP backend via POST using ajax ? 2020 - Live Code Stream - Everything related to Programming, AI and computer science! The Fetch API is based on JavaScript promises, so you need to use the .then method to access the promise or response returned. Even though developers rarely use the XMLHttpRequest directly now, its still the building block that works underneath many popular HTTP request modules. How to compare two arrays in JavaScript ? Making POST requests with Fetch also follows a similar pattern to the previous example. While these methods have their own strengths and weaknesses, you can pick the best fit to use in your web applications after carefully considering your requirements. You should use MultiPart post method. Base64 image representation can be directly placed within html to render an image. Is a PhD visitor considered as a visiting scholar? a QR code with 150 random values. Here's an example of the most basic kind of POST request: using a