find if a img have alt in jquery if not then add from array

Question

first need to find all img in the sites

$(\"#body\").find(img)

and then check if the img have the \"alt\" attribute, if image have the attribut

Answer 1

var arr = ['hello', 'hi', 'yo'];
$('#body img').each(function() {
    if ( ! $(this).attr('alt'))
        $(this).attr('alt', arr[Math.round(Math.random() * (arr.length - 1)))]);
});