Can all JavaScript functionalities be theoretically replaced with Silverlight?

Can all JavaScript functionalities be开发者_StackOverflow theoretically replaced with Silverlight? If yes, I can save my time and just learn Silverlight.

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I recommend that you learn JavaScript as well as Silverlight.

Silverlight is a product of Microsoft. Being proprietary, it may or may not be popular or even exist a few years down the road. JavaScript (ECMAScript) is an open standard and is supported natively by all browsers. Knowledge of JavaScript will be useful for any web site project.

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Theoretically yes. Just remember that only about 60% of internet-enabled computers have it installed. And don't forget all the accessibility issues associated with using a plugin instead of using native browser functionality.

Only use it if you absolutely need a feature of Silverlight that HTML/JavaScript cannot provide, and even then, it would probably be better to use Flash because of its install base.

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Theoretically, yes, Sliverlight could replace JavaScript, as could Flash.

But you have to remember that JavaScript is always faster than Silverlight (or Flash), and therefor better for most tasks.