Highlights of JavaScript — Popup Windows and Input Validation

Highlights of JavaScript — Popup Windows and Input Validation

To learn JavaScript, we must learn the basics.

To learn JavaScript, we must learn the basics.

In this article, we’ll look at the most basic parts of the JavaScript language.

Opening Popup Windows

We can open popup windows with the window.open method.

For example, we can write:

const monkeyWindow = window.open();

To add some content to the window, we can write:

const monkeyWindow = window.open();
const windowContent = `<h1>hello world</h1>`;
monkeyWindow.document.write(windowContent);

We call document.write on the monkeyWindow to show the content.

Also, we can show the content of a URL with the location.assign method:

const monkeyWindow = window.open();
monkeyWindow.location.assign("https://www.google.com");

Now we should see Google displayed in the new window.

We can also write:

const monkeyWindow = window.open();
monkeyWindow.location.href = "https://www.google.com";

to do the same thing.

To close a window, we can write:

const monkeyWindow = window.open();
monkeyWindow.location.href = "https://www.google.com";
monkeyWindow.close();

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