How can I check JavaScript arrays for empty strings?

Question

I need to check if array contains at least one empty elements. If any of the one element is empty then it will return false.

Example:

var my_arr = ne         


        

Answer 1

function containsEmpty(a) {
    return [].concat(a).sort().reverse().pop() === "";
}
alert(containsEmpty(['1','','qwerty','100'])); // true
alert(containsEmpty(['1','2','qwerty','100'])); // false