javascript - Benefits of loading JS at the bottom as opposed to the top of the document -

To load your JS under the document, what are the real benefits (if any), as opposed to the head It seems that the page is loading and JS dependent functionality has taken a while.

I am using all the templates to start, but in reality, it is not sure how beneficial benefits are to JS below.

Is this really a difference, and if so, why?

1. If you include external JS files below of your page, you Gives priority to your HTTP requests, which is for a visual display that will be presented to the client instead of the interaction or logic of the mobility. I believe that if you do not use the content delivery network to deliver images to the client, then you are allowed to process up to 2 HTTP requests at a time. You do not want to waste these requests on logic because we all know how endless the end user is

2. By loading js at the end of the file, you call a document DOM (most of the time) can access the .ready () function without doing. You know that if the page is rendered, then it creates your Javascript code that loads the necessary page elements in advance. There are some other reasons but I try to remember important people when all js down seems strange at the place.