Core: renderer, removeAttr remove an attribute from a set of elements (T1261932) (#28595)

Author: chaosmirage

packages/devextreme/js/__internal/core/m_renderer_base.ts

@@ -115,7 +115,10 @@ initRender.prototype.attr = function (attrName, value) {
 };
 
 initRender.prototype.removeAttr = function (attrName) {
-  this[0] && domAdapter.removeAttribute(this[0], attrName);
+  this.each(function (_, element) {
+    domAdapter.removeAttribute(element, attrName);
+  });
+
   return this;
 };
 

packages/devextreme/testing/tests/DevExpress.core/renderer.tests.js

@@ -372,6 +372,21 @@ QUnit.test('Add/remove atribute', function(assert) {
     assert.equal(!!$element.get(0).getAttribute('readonly'), true, 'element readOnly attribute');
     $element.attr('readonly', false);
     assert.equal($element.get(0).getAttribute('readonly'), undefined, 'element readOnly attribute');
+});
+
+QUnit.test('Remove an attribute from the whole set of elements (T1261932)', function(assert) {
+    const fixture = document.getElementById('qunit-fixture');
+
+    const $wrapper = renderer('<div>').html('<div readonly="true">1</div><div readonly="true">2</div>');
 
+    const $allInnerElements = $wrapper.find('div');
+
+    fixture.appendChild($allInnerElements.get(0));
+
+    $allInnerElements.removeAttr('readonly');
+
+    $allInnerElements.each(function(_, element) {
+        assert.equal(element.getAttribute('readonly'), undefined, 'element readOnly attribute');
+    });
 });