Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

var guestList = ['Sandra', 'Omar', 'Magnus', 'Becky'];
document.body.innerHTML += guestList.join(",")+"<br/>";
guestList.push('armand','luca');
document.body.innerHTML += guestList.join(",")+"<br/>";
guestList.unshift('Jim','Amelia','Kurt');
document.body.innerHTML += guestList.join(",")+"<br/>";

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JSFiddle - React, Tailwind, and code Playground

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Use pre-released features

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Console