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jQuery Mobile does not pull the whole page into the dom, it grabs the first data-role="page"element and its descendants and pulls that into the current dom.
So any scripts in the <head> of the document will not be included.
I generally put all the functional JavaScript for my site on the index page and then when external pages are loaded into the dom they can benefit from the already loaded scripts.
Also, you can place JavaScript code inside the data-role="page" element and it will be included when jQuery Mobile does its AJAX load of the page.
UPDATE
A good system for this is to put all of your JS into an include file and include it on each page of the site. It will be ignored if pages are brought into the DOM by AJAX, but if someone refreshes somewhere in your site, the JS will be available.
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基本思想就是把<script src="***.js"></script>,放到body标签里,jquery.mobile.changepage()在加载页面的时候，就会把外部文件加载近来
用location.href = "***.html",可以加载外部js文件
原文链接：http://stackoverflow.com/questions/7449402/jquery-mobile-mobile-changepage-not-loading-external-js-files