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vendor/yiisoft/yii2/assets/yii.captcha.js

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+/**
+ * Yii Captcha widget.
+ *
+ * This is the JavaScript widget used by the yii\captcha\Captcha widget.
+ *
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+(function ($) {
+    $.fn.yiiCaptcha = function (method) {
+        if (methods[method]) {
+            return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
+        } else if (typeof method === 'object' || !method) {
+            return methods.init.apply(this, arguments);
+        } else {
+            $.error('Method ' + method + ' does not exist in jQuery.yiiCaptcha');
+            return false;
+        }
+    };
+
+    var defaults = {
+        refreshUrl: undefined,
+        hashKey: undefined
+    };
+
+    var methods = {
+        init: function (options) {
+            return this.each(function () {
+                var $e = $(this);
+                var settings = $.extend({}, defaults, options || {});
+                $e.data('yiiCaptcha', {
+                    settings: settings
+                });
+
+                $e.on('click.yiiCaptcha', function () {
+                    methods.refresh.apply($e);
+                    return false;
+                });
+            });
+        },
+
+        refresh: function () {
+            var $e = this,
+                settings = this.data('yiiCaptcha').settings;
+            $.ajax({
+                url: $e.data('yiiCaptcha').settings.refreshUrl,
+                dataType: 'json',
+                cache: false,
+                success: function (data) {
+                    $e.attr('src', data.url);
+                    $('body').data(settings.hashKey, [data.hash1, data.hash2]);
+                }
+            });
+        },
+
+        destroy: function () {
+            this.off('.yiiCaptcha');
+            this.removeData('yiiCaptcha');
+            return this;
+        },
+
+        data: function () {
+            return this.data('yiiCaptcha');
+        }
+    };
+})(window.jQuery);