how to fix jslint The '&&' subexpression should be wrapped in parens error

Question

I put everything in parentheses but code below still throws error in jslint:

Problem at line 5 character 104: The \'&&\' subexpression should be wrap         


        

Answer 1

It's complaining about the form if(a && b && c || d) because (I suppose) it's not immediately obvious whether && or || will take precedence. Fix it to look like if(a && b && (c || d)) and it will stop complaining.