MDL-36609 javascript: ensure HTML element exists before attempting to perform JS functionality

2012-11-19 15:43:12 +08:00
parent 6548ce0915
commit 302808a37f
1 changed files with 9 additions and 4 deletions
@@ -333,11 +333,16 @@ M.util.init_maximised_embed = function(Y, id) {
        if (Y.Lang.isString(el)) {
            el = Y.one('#' + el);
        }
-        var val = el.getStyle(prop);
-        if (val == 'auto') {
-            val = el.getComputedStyle(prop);
+        // Ensure element exists.
+        if (el) {
+            var val = el.getStyle(prop);
+            if (val == 'auto') {
+                val = el.getComputedStyle(prop);
+            }
+            return parseInt(val);
+        } else {
+            return 0;
        }
-        return parseInt(val);
    };

    var resize_object = function() {