What Is ExtJS ExtJS 4+ Extensions Examples Tutorials

23Aug/140

ExtJS 4 and 5 vs. IE 6 thru 11

Get a neck stretch and a clear picture of legacy through modern IE support in ExtJS 4 and 5:

ExtJS 4 & 5 vs. IE 6 thru 11

Note that the Neptune theme, which shipped in an ExtJS 4 dot release, does not support IE6. It makes use of transparent PNGs, which aren't supported in IE6.

One of the greatest advantages of the ExtJS framework is how far back it supports IEs. The interesting thing here is the "adaptive markup" that it generates, say for a framed panel with gradient headers:

  • Pre-IE9: a "heavy" table frame with every edge and corner having a sliced image of the frame
  • IE9 (introduced round corners): still a bit of framing for the header gradient image if used with rounded corners
  • IE10 & 11: minimal markup utilizing CSS3 effects
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12Jan/140

Responsive Design in ExtJS 4

I think this has been a hot topic lately: making web sites that adjust based on resolution of the device the user is using to browse. Now I'm not going to make this post about Sencha Touch. Even though in my "perfect responsive strategy" I would be using both ExtJS and Sencha Touch (and I can write more about that if you care to comment about your interest), this post is going to be only about ExtJS.

In this example we'll be achieving the very common "navigation collapses to menu" effect, demonstrated here in my Android 4.x LG Intuition, by rotating the device from horizontal to vertical:

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22Aug/130

Touch 2.2.x is broken in Chrome 29

Chrome 29 came out just two days ago and it appears Sencha Touch 2.2.x projects don't display properly. I'm not sure if it affects mobile Chrome browsers (I assume it would, once they update, but they do lag behind the desktop browser in that department).

A fix posted by Steve Drucker on his blog: http://druckit.wordpress.com/2013/08/22/sencha-touch-2-x-and-google-chrome-29/

Just change the st-box mixin inside of:

/touch2/resources/themes/stylesheets/sencha-touch/base/mixins/_Class.scss

...and recompile the SASS. The new code:

@mixin st-box($important: no) {
    @if $important == important {
        display: flex !important;
        display: -webkit-box !important;
        display: -ms-flexbox !important;
    } @else {
        display: flex;
        display: -webkit-box;
        display: -ms-flexbox;
    }
}
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