jQuery GREP   JSON empty data filter
$(data.content).each(function(index, content){
      $("#htmlID").append('<span>' + content.myinfo + ');
    });
        {

        "content":

        [
    {"myinfo":"Bill Clinton 095 years old. "},
    {" "},
    {"myinfo":"Bill Clinton 295 years old. "},
    {" "}

        ]
        }

$(data.content).each(function(index, content){
    if(!(typeof content.myinfo === "undefined" ||
      content.myinfo.length<1)){
      $("#htmlID").append('<span>' + content.myinfo);
    }
});

{" ": ""}