Question

I have a bookmarklet that gets the meta keywords on a page. However if the there are no meta keywords the bookmarklet breaks.

Here is my current javascript

function docoument_keywords(){
  var keywords;
  var metas = document.getElementsByTagName('meta');

  for (var x=0,y=metas.length; x<y; x++) {
    if (metas[x].name.toLowerCase() == "keywords") {
      keywords = metas[x];
    }
  }

  return keywords.content;
}

k = document_keywords();

$('body').append("<p>" + k + "</p><p>Content</p>");

The bookmarklet works fine when there are actually keywords in the meta keywords. However its break when there are none. You guys have any solutions?

Much appreciated!

Answer 1

function document_keywords(){
    var keywords = '';
    var metas = document.getElementsByTagName('meta');
    if (metas) {
        for (var x=0,y=metas.length; x<y; x++) {
            if (metas[x].name.toLowerCase() == "keywords") {
                keywords += metas[x].content;
            }
        }
    }
    return keywords != '' ? keywords : false;
}

k = document_keywords();

if (k) {
    $('body').append("<p>"+k+"</p>");
}

Working example: JS Fiddle