June 2018
Intermediate to advanced
596 pages
12h 39m
English
Content preview from Java EE 8 Development with Eclipse
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Invoking a POST RESTful web service from JavaScript
Here is a simple example of how to invoke our RESTful web service to add a course from JavaScript:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Add Course - JSON</title>
<script type="text/javascript">
function testAddCourseJSON() {
//Hardcoded course information to keep example simple.
//This could be passed as arguments to this function
//We could also use HTML form to get this information from users var courseName = "Course-4"; var credits = 4; //Create XMLHttpRequest var req = new XMLHttpRequest(); //Set callback function, because we will have XMLHttpRequest //make asynchronous call to our web service req.onreadystatechange = function () { if (req.readyState == 4 && req.status ...