JSFiddle - React, Tailwind, and code Playground

JavaScript

var array = [267, 306, 108, 263, 67];

findLargest3();

function findLargest3(){ 
    // sort descending
    array.sort(function(a,b){
        if(a < b){ return 1; } 
        else if(a == b) { return 0; } 
        else { return -1; }
    });
	alert(array.slice(0, 3));
    
}