fix(input): fix hidden textarea height issue

Closes #1356.
angular · Feb 19, 2015 · efbd414 · efbd414
1 parent eda14e9
commit efbd414
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/src/components/input/input.js b/src/components/input/input.js
@@ -241,10 +241,14 @@ function inputTextareaDirective($mdUtil, $window) {
 
       function growTextarea() {
         node.style.height = "auto";
-        var line = node.scrollHeight - node.offsetHeight;
         node.scrollTop = 0;
-        var height = node.offsetHeight + (line > 0 ? line : 0);
-        node.style.height = height + 'px';
+        var height = getHeight();
+        if (height) node.style.height = height + 'px';
+      }
+
+      function getHeight () {
+        var line = node.scrollHeight - node.offsetHeight;
+        return node.offsetHeight + (line > 0 ? line : 0);
       }
 
       function onScroll(e) {