Trims long text and add ellipsis

Javascript: trim long text

// trim long text
function trimText(text, maxlength, ellipsis) {
    var output = '',
        i = 0;

    if (text.length >= maxlength) {

        ellipsis = ellipsis || '…';
        text = text.split(' ');

        while (output.length + text[i].length < maxlength) {
            output = output + (i === 0 ? '' : ' ') + text[i];
            i++;
        }

        return output + ellipsis;
    
    } else {

        return text;
    }
}