How can I choose an object key at random?

Question

I have the following code;

namedarray[\'India\']=\'New Delhi\';
namedarray[\'Australia\']=\'Canberra\';
namedarray[\'Indonasia\']=\'Jakarta\';
namedarray[\'I         


        

Answer 1

Try this:

function fetch_random(obj) {
    var temp_key, keys = [];
    for(temp_key in obj) {
       if(obj.hasOwnProperty(temp_key)) {
           keys.push(temp_key);
       }
    }
    return obj[keys[Math.floor(Math.random() * keys.length)]];
}

var random_name = fetch_random(namedarray);
document.getElementById('question').innerHTML="Q." + random_name +"  is capital for which country"