JavaScript's Limitations
Yes, JavaScript does have limitations, but these limitations are natural and unavoidable by-products of its main purpose: to add interactivity to your web pages.
JavaScript Can't Talk to Servers
One of JavaScript's drawbacks is also its main strength: It works entirely within the web browser. As we've seen, this cuts down on the amount of time your browser spends communicating with a webserver. On the other hand, this also means that JavaScript can't communicate with other machines and therefore can't handle some server tasks you may need to do.
For example, JavaScript can't aggregate information collected from your users. If you want to write a survey that asks your visitors a couple of questions, stores their answers in ...
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