From c77fc689b51c734f7a2045bfe08be75221a894dc Mon Sep 17 00:00:00 2001
From: Valentin Zwick <vzwick@users.noreply.github.com>
Date: Sun, 6 Apr 2014 22:36:03 +0200
Subject: [PATCH] Query for `<img>` elements only

While this is probably a case of micro-optimisation, [there is a performance gain of some 5%](http://jsperf.com/queryselectorall-with-attr-only-and-with-element-type) when querying for `img[data-echo]` as opposed to `[data-echo]` only.
---
 src/echo.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/echo.js b/src/echo.js
index ce86a45..3399e13 100644
--- a/src/echo.js
+++ b/src/echo.js
@@ -76,7 +76,7 @@ window.Echo = (function (global, document, undefined) {
    */
   var init = function (obj) {
 
-    var nodes = document.querySelectorAll('[data-echo]');
+    var nodes = document.querySelectorAll('img[data-echo]');
     var opts = obj || {};
     offset = parseInt(opts.offset || 0);
     throttle = parseInt(opts.throttle || 250);