A very quick and dirty way to export key and value pairs from web console of elastic beanstalk environments config page.

While viewing the elastic beanstalk config page containing the variable inputs paste the following into your browser console.

var strs = [], inputs = $('.properties-table input');
$.each(inputs, function(key, input){
  if(!((key+1)%2)){
    strs.push(inputs[(key-1)].value + ' = ' + inputs[key].value);
  }
})
console.log(strs.join("\n"));