JavaScript Visual Studio Code settings

Question

I have used Brackets as a JavaScript editor. Highlighting syntax errors was poor. I started exploring JSHint when somebody suggested that I try "Visual Studio Code" . So I downloaded VSCode and typed this into the file test.js:

var y prompt(Enter a number);
Y=10;
y=y+5
alert(x);

There is hardly any syntax checking at all. 'a number' is underlined. That's it. No indication that Y has not been defined on line 2. Or line 3 has missing semi-colon. Or that x is undefined on line 4.

Do I need to change some VSCode settings?

Or do I need add a JSHint linter extension?

Answer 1

Because VSCode does not come with a linter, you need to install a package into VSCode: https://marketplace.visualstudio.com/items?itemName=dbaeumer.jshint

Also, with JavaScript, declaring a variable without var will work, it's just not a good way to do it for various reasons. So again, this is a linting issue.

Semicolons are not mandatory, again, a linting issue.