如何更新Stock Quote API以获取搜索结果？

This is my first question on StackOverflow. I'm researching how to use API's for a school assignment and I found an API (from Markit on demand) that returns stock quotes - but I can't figure out how to update the JS to query a search results from the DOM. Right now, it's only searching for the pre-defined 'AAPL' symbol - how can I update the JS to query a search result? Thank you!This is my first question on StackOverflow. I'm