JSFiddle - React, Tailwind, and code Playground

JavaScript

var list = [9,7,8];

var sort = function( arr ) {
    var i = 0,
        max = arr.length,
        value,
        i;
    
        for (index in arr) {
            value = arr[index];
            i = parseInt(index-1);

            while( i >= 0 ) {
                if( value < arr[i] ) {
                    arr[i + 1] = arr[i];
                    arr[i] = value;
                    i--;

                } else {
                    break;
                }
            }

        }
};

var min = function( arr ) {
    sort(arr);
    return arr[0];
}