Visual Studio 2017 Javascript linter highlight errors

As a slight aside from the obvious requirements to see the actual error messages, Visual Studio (certainly from 2013 onward) has an excellent feature that highlights markers in the code on the scroll bar to the right; I use it all the time as a fast navigation method - it's called the 'Enhanced Scrollbar' (a simple and effective naming convention!).

This link shows the latest version, but, being a lowly public sector developer, I use VS2013, which looks like this...

It's a little difficult to see, but notice at the bottom of the section that I'm working on there's a simple error in the code, where I've put a space in a property name (d'oh!). The bar to the right looks like a miniature version of the code, showing different coloured blocks beside what you've written. Notice that there are yellow and green blocks, showing changes to the code, magenta blocks, showing questionable spelling, and, just where you can see the white bar across the width of the miniature view, there's a red box, indicating the error in your code. This arcticle goes a little more into it.

To activate this in 2017, use the link above. For 2013, go into Tools > Options. In the search box at the top of the dialog type 'scroll bar' and make sure the highlighted areas in the screenshot below are checked or unchecked as required.

Fantastic feature - I recommend it!