Is HTML 5 + CSS 3 >= Microsoft Silverlight
It is said that the unreleased HTML 5 and CSS 3 can produce the effects and graphics which can be done in Microsoft Silverlight. It thats true then can I skip learning Silverlight and wait for HTML5 and CSS 3?
Silverlight is a tool for developing web applications (RIA - Rich Internet Applications).
Pure HTML+ CSS (even if it is HTML5 and CSS3) will only produce web sites unless you put some code/framework behind them.
Therefore while visually they might look similar they are two completely separate things behind the scenes.
这就像比较苹果和橘子，但有一点是使HTML 5 + CSS更好，然后Silverlight：它运行在每个现代浏览器，移动设备等等...
You don't need to wait for HTML5 and CSS 3, they are here today and can be used right now. Web standards aren't 'released' in the way software is, they are standardisations of existing browser implementations.
What front-end technology you choose very much depends on project requirements, some things that are easy in Flash/Silverlight are just not possible yet or really hard to achieve using web standards (think Canvas and WebGL).
There is no definitive answer for this, and there may never be.
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