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-rw-r--r--modules/luci-base/htdocs/luci-static/resources/ui.js15
1 files changed, 15 insertions, 0 deletions
diff --git a/modules/luci-base/htdocs/luci-static/resources/ui.js b/modules/luci-base/htdocs/luci-static/resources/ui.js
index 7823182f04..77074d5075 100644
--- a/modules/luci-base/htdocs/luci-static/resources/ui.js
+++ b/modules/luci-base/htdocs/luci-static/resources/ui.js
@@ -128,6 +128,21 @@ var UIElement = baseclass.extend(/** @lends LuCI.ui.AbstractElement.prototype */
},
/**
+ * Check whether the input value was altered by the user.
+ *
+ * @instance
+ * @memberof LuCI.ui.AbstractElement
+ * @returns {boolean}
+ * Returns `true` if the input value has been altered by the user or
+ * `false` if it is unchaged. Note that if the user modifies the initial
+ * value and changes it back to the original state, it is still reported
+ * as changed.
+ */
+ isChanged: function() {
+ return (this.node ? this.node.getAttribute('data-changed') : null) == 'true';
+ },
+
+ /**
* Check whether the current input value is valid.
*
* @instance