Example: Try to write friendly Javascript code _ javascript skills

Example: Write as friendly Javascript code as possible when searching the Search Engine's robot, text/html has the highest degree of friendliness (except text/xml at present), while text/javascript is unfriendly. If robot wants to judge DHTML code, this complexity is also high, and it is not easy to draw. Therefore, in DHTML programming, it is necessary to improve the Code friendliness. The better way is to "simplify DHTML code into code without HTML as much as possible ". How can this sentence be understood?

E. g:

A javascript menu.
Method 1: Use the conventional programming method: