onClick="testResults(this.form)" is an event handler. It tells the browser to invoke the given JavaScript function when the button is clicked, then pass in an object representing the form.

The Attributes.Add method shown on the last line adds an "onClick" event to the button named "Button1." This causes the button to execute the JavaScript code defined in the textHTML variable.

We all know how good Google is at understanding and crawling JavaScript, AJAX and complex web pages in many forms, but Google's John Mueller said, when it comes to discovering links within onclick ...

Dahl has since launched Deno, a server-side JavaScript framework designed to address Node’s shortcomings. Now, Deno includes a front-end framework called Deno Fresh. Let’s take it for a spin.

Do you need to perform an Ajax file upload with pure JavaScript? This example lays out the steps to accomplish an Ajax file upload without the need for a JavaScript library like jQuery or Dojo.

To enable JavaScript, go into the Settings app on your iPhone, click "Safari," then "Advanced," and swipe the JavaScript button to the right so it appears green. Here's a full breakdown with pictures.