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

I'm fairly certain you want the following:

function t() {
    var c1, c2;
    if (typeof c1 === 'string' && typeof c2 === 'string' && c1 !== null && c2 !== null && (c1.trim() === '' || c2.trim() !== '')) {
        return;
    }
}

Not everyone knows the precedence for boolean logic, so they want you to wrap the c1.trim() || c2.trim() statements in parenthesis so it's clear how they get operated.

As a side note, I think it's ridiculous that jslint wants spaces between my operators and my operands. I think it's much more clear when there is NOT a space.