_.isDefined
A quick shortcut to avoid of using !_.isUndefined
Original source: https://gist.github.com/turbobabr/11106163
Copyright (C) 2015 Alexey Kucherenko - https://github.com/killmenot
Licensed under the MIT
Installation:
npm install underscore-is-defined
Dependency:
One of
Usage:
Load it, either as is (in the browser), as an AMD module, or as a CommonJS/Node.js module), then mix it in with the parent library (which must be explicitly injected):
_.mixin({isDefined: underscoreIsDefined(_)});
Call it like this:
var result = _.isDefined(foo)