Create array and randomize node.js array - node.js

Question

I'm trying to write a cisco webex bot which get all people in the space(room) and randomly write only one name.
I have this code
framework.hears("daily host", function (bot) {
console.log("Choosing a daily host");
responded = true;
// Use the webex SDK to get the list of users in this space
bot.webex.memberships.list({roomId: bot.room.id})
.then((memberships) => {
for (const member of memberships.items) {
if (member.personId === bot.person.id) {
// Skip myself!
continue;
}
let names = (member.personDisplayName) ? member.personDisplayName : member.personEmail;
let arrays = names.split('\n');
var array = arrays[Math.floor(Math.random()*items.length)];
console.log(array)
bot.say(`Hello ${array}`);
}
})
.catch((e) => {
console.error(`Call to sdk.memberships.get() failed: ${e.messages}`);
bot.say('Hello everybody!');
});
});
But this doesn't work.
Also name after i use let arrays = names.split('\n'); separated by space and don't have comma.
I think because of what code doesn't work
Output of console log:
[ 'George Washington' ]
[ 'John' ]
[ 'William Howard Taft' ]
Main question now how to turn output to array?

Answer 1

That's because arrays[Math.floor(Math.random()*items.length)] only assigns an array with length 3. You need to randomise the index and push to array or use a sort function on the original array
var array = arrays.sort((a,b)=>{
return Math.floor(Math.random()*arrays.length);
});
if you are looking to get the output as per you question you can use reduce instead of sort.
var arrays = [ 'George Washington', 'John', 'William Howard Taft'];
var array = arrays.reduce((a,i)=>{
if(!a) a = [];
a.splice(Math.floor(Math.random()*arrays.length), 0, [i]);
return a;
},[]);

Answer 2

Here is how to get a single name from your data, and ensuring it is a string. There are only four names in the array, so run the snippet several times if you keep getting the same name.
// A list of names. Notice that Arraymond is an array; the other names are strings.
const names = [ 'George Washington', 'John', 'William Howard Taft', ['Arraymond'] ];
// Randomize the names
const randomNames = names.sort(() => Math.random() - 0.5);
// Get the first name. Make sure the name is a string (not an array)
const name = randomNames[0].toString();
console.log(name)
A tip: don't name your array "array" or "arrays" - it is not meaningful. Use good naming conventions and meaningful variable names that help others understand what the code is doing.