Update lazyload.js

edwinbos · Aug 28, 2019 · 79adc0e · 79adc0e
1 parent b4e7e83
commit 79adc0e
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/lazyload.js b/lazyload.js
@@ -128,17 +128,20 @@ var loadImage = function(elem) {
 
   if (tagName == 'PICTURE') {
     var sourceElements = elem.getElementsByTagName('source'),
-        imgElement = elem.getElementsByTagName('img')[0];
+        imgElement = elem.getElementsByTagName('img')[0],
+        dataSrc = imgElement.getAttribute('data-src');
 
     for (var i = 0; i < sourceElements.length; i++) {
       sourceElements[i].srcset = sourceElements[i].getAttribute('data-srcset');
     }
 
-    imgElement.src = imgElement.getAttribute('data-src');
+    if (dataSrc) {
+      imgElement.src = dataSrc;
+    }
   }
 
   elem.classList.add('is-lazyloaded');
 }
 
 return lazyLoad;
-});
+});