jQuery(document).ready(function() {

// Wrap each word in a span.
$('#id .class').each(function() {
var text = $(this).text().split(' ');

for (var i = 0, len = text.length; i < len; i++) {
text[i] = '<span class="word-' + i + '">' + text[i] + '</span>';
}
$(this).html(text.join(' '));

});

}