utils.js
function placeholderUrl(width, height, text) {
    var url = 'http://placehold.it/' + width;
    if (height) {
        url += 'x' + height;
    }
    if (text) {
        url += '&text=' + encodeURIComponent(text);
    }
    return url;
}
function placeholderUrl(width, height, text) {
    var url = 'http://placehold.it/' + width;
    if (height) {
        url += 'x' + height;
    }
    if (text) {
        url += '&text=' + encodeURIComponent(text);
    }
    return url;
}
function placeholderUrl ( width , height , text ) { var url = 'http://placehold.it/' + width ; if ( height ) { url += 'x' + height ; } if ( text ) { url += '&text=' + encodeURIComponent ( text ) ; } return url ; }
get placeholder image url.

@param {number} width
@param {number} [height=width]
@param {string} [text]
@returns {string} placeholder image url
get placeholder image url .