read gsm number from iphone through javascript

Is it possible through javascript to read the number from the 开发者_JAVA技巧iphone. Lets say i have a html page where they have to fill in the gsm number, can javascript read the number from the phone and fill the form with it?

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From JavaScript, it's not possible. Actually, the iPhone itself might not know it at all, as the phone number is not necessarily stored on your SIM card.

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It should be noted that if you are writing your own iPhone application, you can use following:

1. UIWebView class: http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/Reference/Reference.html

2. You can have HTML code in the your application bundle (or just anywhere on the web)

3. You can execute any Javascript on that HTML using this method: http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/Reference/Reference.html#//apple_ref/doc/uid/TP40006950-CH3-SW21

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There is a Draft from W3C on System Information API into the Device API section. But it is not yet implmented in any browser.