Category: Web Development

JavaScript document.execCommand() Web Method

The JS document.execCommand() method is quite interesting. It can be used to execute certain commands to play with an editable region that is achieved either via the contenteditable attribute or when the HTML document (of the main window or some iframe window) has been switched to designMode using this code:

document.designMode = 'on'; // or 'off'
// or for an iframe
iframeNode.contentDocument.designMode = 'on'; // or 'off')

Infact try the first snippet right in dev tools and see what happens 🙂

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Quick Walkthrough of RSpec Mocks (Introduction) in Code

Before we go through a lot of code samples, make sure you understand the different testing terms like mocks, stubs and test doubles. That’ll help you understand this article much better as I use a lot of those terminologies while going through different code samples.

A test double is a generic term (for stubs and mocks) that represents a real object (but sort of fake) to which messages can be passed (method calls) and fake return values can be specified. It’s used in unit testing to test a particular system or object in isolation. In this article we’ll go through test doubles (mocks) in RSpec. Let’s see how to create a test double representing the object being faked.

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