Toggle values into and out of an array in Javascript

Question

I want to have a simple array of values, ie

var simpleArray = [\"SE1\",\"SE2\",\"SE3\"];

I want to check this array when an action happens (a c

Answer 1

extremely compact lodash version, using xor function, which is used to create a new array of values found only in one array and not the other

xor(array, [valueYouWantToToggle])