After years of developing with Flex, I am considering using OpenLaszlo for my next application, which needs to work on the iPad. Even though OpenLaszlo offers a Flash and DHTML runtime, I haven't come across many real-world applications built with it besides the demos on their website:
If you have experience building a large application with the DHTML runtime, I would love to hear about your insights and challenges.
Thank you!
After extensive testing, I have found that our advanced video editing software functions flawlessly in OpenLaszlo's HTML5 mode (previously known as DHTML mode). The only issue encountered was slight misalignment of text. Although audio and video playback is not supported in the current official release (4.9.0), the latest nightly builds (available at ) include html5video and html5audio classes which are compatible with various media types supported by different browsers through HTML5 tags.
To see a detailed summary of my test results, please visit:
In relation to iPad compatibility, all features performed well except for the inability to initiate more than one video/audio item programmatically without user interaction. This limitation appears to be inherent to iPad itself rather than a drawback of OpenLaszlo, as a similar restriction was observed when testing an HTML5 application on the device.
Visit Pandora's website here as well as Gliffy's website here, both of which are powerful platforms developed using the OpenLaszlo Framework.
OpenLaszlo introduced the DHTML runtime with its 4.0 release back in March of 2007, allowing users to create HTML5 applications. By mid-2009, I had the chance to see Laszlo Webtop running on the DHTML runtime, although Laszlo Calendar was not yet functional at that time. Fast forward to March 2011, and a much improved version of Webtop was operating smoothly in DHTML mode.
In July 2012, Gliffy made headlines with the announcement of their Gliffy HTML5 Editor Preview. Known for their online diagram editor, previously powered by Flash, Gliffy's successful transition to DHTML speaks volumes about the capabilities of this runtime technology. While browser compatibility details were scarce, the future looks bright for DHTML-based applications.
From what I've seen, it appears that the DHTML runtime is ready for prime time - the real question now is whether or not funding will continue to support its development. With a limited number of developers currently involved, the sustainability of DHTML projects remains uncertain.
Although OpenLaszlo has yet to update its DHTML runtime to support newer versions of Internet Explorer like IE9+, efforts are underway to enhance compatibility with Microsoft's browser. For now, using DHTML on browsers like Chrome, Firefox, and Safari should yield positive results.
For those looking to build OpenLaszlo applications using the DHTML runtime, opting for the Trunk version (scheduled for the upcoming 5.0 release) is recommended. Numerous bug fixes have already been implemented in Trunk, making it a popular choice among developers despite being unreleased.
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