Invalid example

[danwellman]

Hey there, in the Combined var declarations section, the bug that you illustrate through accidentally forgetting a comma in a list of combined variable declarations is easily avoided by using the 'use strict'; directive, which causes an Uncaught ReferenceError to be thrown rather than silently creating a global variable.

I agree that using combined or multiple var statements is a personal preference rather than a best-practice, but using strict mode wherever possible, definitely is a best practice :)

[stevekwan]

Hi Dan,

Thanks for this! This guide was written several years ago and so use strict was not predominant at the time. If you would like to issue a pull request to add this new information I would really appreciate it!