isin

Check if a thing is in an array

Installation

    npm install isin

Usage

Check out the tests if this is unclear to you:

    
    var isin = require("isin").isin;
    var notin = require("isin").notin;
    
    var options = [1,2,3,4,5];
    
    
    if( isin( options, 9 ) ){
        console.log("We have a 9!");
    }
    
    if( notin(options, 10) ){
        console.log("We can do without a 10!");
    }

Why

I got sick and tired of if( Array.isArray(options) && options.indexOf(foo) !== -1 ) Plus, there are 42 tests.

better be verbose then sorry