Day3 JS Red Book reading notes

1. In general, the script element should be placed in the head tag, but for a number of pages that require a lot of JS code, in order to make the browser does not feel the JS code loading has a noticeable delay, put the scirpt element in the body tag.

2. Use the SRC attribute in the script element to refer to the trusted external domain JS file, for example: <script type= "Text/javascript" src= "Http://www.somewhere.com/afile.js" ><script>

Day3 JS Red Book reading notes