JQuery inside post?

The new theme I’m working with has a static front page that I can set to feature my latest post OR content from another page, but not both.

So I am building a page to put the content I want to be featured. For example, I have three client testimonials with a link to more on their own page. Beneath this I would like to feature the image and snippet from my latest blog post.

Is there a jquery or some other widget that I can use to capture whatever my latest blog post is and put the teaser into this feature page content I’m creating?