JSFiddle - React, Tailwind, and code Playground

JavaScript

var markers = [
        'lvlZeroValue',
        'lvlOneValue',
        'lvlTwoValue',
        'lvlThreeValue',
        'lvlFourValue',
        'lvlFiveValue',
        'lvlSixValue',
        'lvlSevenValue',
        'lvlEightValue',
        'lvlNineValue'
    ];

    
    for(i=0;i<markers.length;i++){
    	localStorage[markers[i]] = i;
    }
    
    alert(localStorage.lvlFiveValue);