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-rw-r--r--ui/ui.progressbar.js4
1 files changed, 3 insertions, 1 deletions
diff --git a/ui/ui.progressbar.js b/ui/ui.progressbar.js
index 858490757..328f8be42 100644
--- a/ui/ui.progressbar.js
+++ b/ui/ui.progressbar.js
@@ -79,8 +79,10 @@ $.widget("ui.progressbar", {
},
_value: function() {
-
var val = this.options.value;
+ // normalize invalid value
+ if (typeof val != "number")
+ val = 0;
if (val < this._valueMin()) val = this._valueMin();
if (val > this._valueMax()) val = this._valueMax();