Why doesn't the loop create multiple buttons?

Question

JavaScript

We need the loop to add all the buttons according to the array:

$.each(data, function(key, video) {
      console.log('link:'+video.link+' quality:'+video.quality);
      $('.block').html('<a href="'+video.link+'" class="btn btn-primary">'+video.quality+'<br/><small>('+video.size+')</small></a>');
});

As you understand, data is an array. Everything works fine with console.log(). But several buttons should be inserted into $(.block) . And only one is inserted. What's the matter?