"Purpose of JavaScript" "Supporting Activity: Mashups"

Write a 200- to 300-word short-answer response to the following:

• What is the purpose of using JavaScript(r) on a website? What is a specific example of a JavaScript(r) application that will be beneficial on the site you are creating? Use an example other than form validation. What is the step-by-step process that would be followed to add the JavaScript(r) described in your example to a website?
• Write a 200- to 300-word short-answer response to the following:
  
  • Based on the Keston (2013) article in the Electronic Reserve Readings, what are the advantages and disadvantages of using mashups? What is one example from the list in Table 1 of popular mashup categories that would work well on your site? How would you like the mashup to work? How would it fit with the goals for your site?