Convert an array into object boolean [duplicate]

Question

I have this array ["one","two","three"] would like to convert it into this {one:true, two:true, three:true}. Basically what am doing is converting the array items to keys of an object and make them boolean. I have tried using spread operator {... arr} which results to {0:'one',1:'two',2:'three'}, Any Ideas?

Answer 1

You could map objects and assign them to a single object.

var array = ["one", "two", "three"],
    object = Object.assign(...array.map(k => ({ [k]: true })));

console.log(object);