JavaScript What is the safe way to append new elements with jQuery?

IMO, you're doing the right thing to make sure you don't have encoding issues. A great way to improve performance is to place the elements in an Array and only have the one call to append with that array. The main performance implications with multiple append calls is that the DOM may have to recompute the layout of the screen after each time, and that will slow everything down.

var photos = [];
$.each(data.items, function(index, photo) {
  var $imageSpan = $("<span></span>").addClass("image");
  var $anchorTag = $("<a></a>").prop("href", photo.link);
  $("<img/>").prop("src", photo.media.m.replace("_m", "_o")).appendTo($anchorTag);
  $anchorTag.appendTo($imageSpan);
  photos.push($imageSpan);
});
$photoDiv.append(photos);

I would also inline any HTML attributes which are not dynamic. For example, .addClass("image") is not very beneficial; would be faster to put that attribute inline, with $('<span class="image"></span>').

Answer:1

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