function yqlQuery(query, callback){
      var yqlURL = "http://query.yahooapis.com/v1/public/yql";
      var data = {
        q: query,
        format: 'json',
        env: 'store://datatables.org/alltableswithkeys'
      }

      $.get(yqlURL, data, callback, 'jsonp');
    }

    yqlQuery('select * from geo.places where text="Orlando"', function(response){
      console.log(response);
    })

http://thinkvitamin.s3.amazonaws.com/membership/code-samples/YQL_jQuery_Example.zip

Thanks to thinkvitamin.com for the wrapper / video!
http://membership.thinkvitamin.com/library/tools/yql/javascriptjquery-example

yqlQuery wrapper function

jQuery