I am reading Mobile HTML5 written by Estelle Weyle. It is an awesome recap and new knowledge about html, css and javascript. I want to highlight one of tips I got: Use the weakest CSS selectors (can be found on page 204). We all know, that inline CSS and !important are evil. They have a higher level of specifity and override the standard cascade of the CSS rules. If you use !important, then it will be hard to override CSS rules when you really need it. After these two classic “evils” the evil number three is overqualifying of CSS selectors. You should really never add more classes or ids or elements than needed. Consider this: [code language=“css”] .warning { background-color: red; } [/code] It is often enough, you don’t need those: [code language=“css”] html .warning div .warning div.warning, div > .warning body p#myP.blue strong.warning [/code]

I have been curious about the responsive design but have not had time to try it out. To learn more I decided to make an existing website more responsive. A friend of mine drives a Chuvash Dictionary website: samah.chv.su. Today it looks like this in a mobile browser: The site is a classic 1000px-ish centered page with header and two columns. The left column is for the main content and the right column for additional “aside” information. Can it be more classic? This current version works, you can still use the dictionary on a mobile phone. But there are several improvements that can be done:

by Chris Love [slideshare id=15218139&doc=webperformanceoptimizationformodernwebapplications-121116224847-phpapp01]

Wouldn’t it be nice to use html5 and css3 in SharePoint? No problems, there is actually v5 master out there, created by Kyle Schaefer. Or just use h5ml5 and css3 right away in your webparts and pages. But there is a big problem. It doesn’t work in IE9–. One of the issues (even listed by Kyle) is that “save” doesn’t work in modal dialogs where Rich Text Editor is used. Especialy it is for modal dialogs. The problem is not IE9, neither html5 and css3. After some digging in javascript code which is shipped with SharePoint I found out that the problem is some legacy javascript code which is not supported by IE9 but in IE8– (and compatibility mode). When we set IE9 mode in IE9 Dev Tools (F12) and go to Tasks list and try to create a task, we’ll get an error: It is RTE_GetEditorIFrame from init.js:

[slideshare id=11031050&doc=sharepointhtml5-120113215236-phpapp02]   HTML5-and-CSS3-What-About-SharePoint.pdf (968 KB) by Kyle Schaefer

See Richards Bradshaw’s page with explanations and examples of css3 transform and transitions. His code is also available for forking on Github.

A great work: v5.master. I am recommending to try it. The problem are some javascript bugs in the IE 9 when you run IE mode 9 that are necessary to enable html5 and css3 support. You can’t “save” a list item: The reason why it doesn’t work in IE, but in Chrome, Firefox, is that IE invokes some functionality that it doesn’t invoke in other browsers. Next: Enable Save button in IE9