JSFiddle - React, Tailwind, and code Playground

JavaScript

var i;
try {
    if(i) alert('1 ' + typeof i)
    else alert('2 ' + typeof i)
} catch (error) {
    alert(error)
}
        

try {
    if(j) alert(1)
    else alert(2)
} catch (error) {
    alert(error)
}