多元移动应用中的“$（...）。accordion不是函数”错误

I have tried in vain to search for a solution to the problem. I am a newbie to jQuery and I basically don't understand the part about inclusion of jQuery header files.The app seems to run fine if it is just in the index page but once I make it a multipage app,this error comes up. Here is my index.html code:I have tried in vain to search for a solution t