Generally placed position: <head> tag within, <body> tags within, <body> After the tag (label recommendations on the body, help to optimize the page, the page configuration to optimize the speed of loading)
The 1. <head> tag: js externally introduced document or page elements is not directed to the operation js code block.
2. <body> tags inside: the discharge line which are, as long as the operating element on the line below.
3. <body> tags after: The recommended location, may be an external file may be incorporated js code pattern of operations. (In fact, this is placed in the body tag, manual funny.)
