Posts Tagged JavaScript

In the previous article I talked about types and type coercion in JavaScript. In this one I want to talk more about how this coercion applies to JavaScript operators. Lets go over six major operators and look at how they work: typeof The typeof operator returns a string representation of the type of the passed... Continue reading →

Last time, we proposed adding progress events on the image element to avoid the complexity of using XHR to monitor image download progress. In order to display the image in the XHR approach, we used base 64 encoding to convert the binary image data into a data URI. Then, we passed the data URI to... Continue reading →

Suppose you want to display the download progress of high-resolution images in a medical imaging application or an HTML5 game. Currently, this is a little harder than it should be in HTML5/JavaScript. A common approach goes like this: Download the image data by creating an XMLHttpRequest (XHR). Update a progress bar by handling the XHR’s progress... Continue reading →