The first thing to note is that the development of mobile Web pages can be using jquery, but it is not recommended to use it!
The reason why jquery is not recommended is that jquery has a feature that is also an advantage of being talked about, which is that jquery masks differences in browsers.
But the starting point of this feature is based on some PC-side browsers do not support the JavaScript standard API, such as IE, the actual fact is that jquery has a lot of code is to make up for IE trouble. This makes jquery particularly bloated, especially the mobile side of the traffic, the speed of the page to open the situation, the original advantage has become a disadvantage.
Moreover, the mobile browser does not exist in IE this maverick, the vast majority (basically all) browsers are based on the WebKit core or blink core, all support the standard H5 API, so there is no different browser-supported API different problems, and so on, It has become increasingly apparent that jquery's efforts in unifying the API are bloated and meaningless, at least in mobile web segments.
Therefore, it is not recommended to use jquery for developing mobile web.
Why the development of mobile web does not use jquery