It can be very useful and be used to add useful features.. but 90 percent of javascript is for delivering unwanted annoyances like ads... or when not malicious

It can be very useful and be used to add useful features.. but 90 percent of javascript is for delivering unwanted annoyances like ads... or when not malicious it can be used to annoy. making what looks like ordinary links to unexpected things and now the browser back button doesnt go back because I was actually clicking js links and operating a js app rather than clicking real links.. There's a small subset of great uses of javascript. The rest is just hovering toolboxes so I can easily "+1" the page despite not having a google+ account. I prefer the web without the annoying stuff. Once js gets past the "look at what I can do" phase id welcome it more openly.