jshint docs

http://jshint.com/docs/

http://jslinterrors.com/

/*jshint expr:true */ or /*jshint -W030*/

Expected an assignment or function call and instead saw an expression.

/*jshint unused:false*/ or /*jshint -W098 */

‘{a}’ is defined but never used.

/* global -{a} */ or /*jshint -W079 */

Redefinition of ‘{a}’

/*jslint eqeq: true*/

Expected ‘===’ and instead saw ‘==’