reduce in javascript working code example

Example 1: js reduce a array of straing

var authors = [{name: 'some author'},{name: 'another author'},{name: 'last author'}]
var authorString = authors.map(function(author){
    return author.name;
}).join(",");
console.log(authorString);

Example 2: javascript, reduce

const myReduce = myArray.reduce((acc, item) => {
	acc += item
})