JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://documentcloud.github.io/underscore/underscore.js"></script>

JavaScript

var test = {
    1: [],
    2: [],
    3: [],
    4: []
}

var out = _.omit(test, [1,2])
var out2 = _.omit(test, 1,2)
console.log(out)
console.log(out2)