The setValueExpression: currentDate() doesn't work for Date and Time …

src/question.ts

@@ -532,9 +532,7 @@ export class Question extends SurveyElement<Question>
     if(!this.setValueExpressionRunner) {
       this.setValueExpressionRunner = new ExpressionRunner(this.setValueExpression);
       this.setValueExpressionRunner.onRunComplete = (res: any): void => {
-        if(!this.isTwoValueEquals(this.value, res)) {
-          this.value = res;
-        }
+        this.runExpressionSetValue(res);
       };
     } else {
       this.setValueExpressionRunner.expression = this.setValueExpression;
@@ -1929,7 +1927,7 @@ export class Question extends SurveyElement<Question>
     properties: HashTable<any> = null
   ): void {
     const func = (val: any) => {
-      this.runExpressionSetValue(val, setFunc);
+      this.runExpressionSetValueCore(val, setFunc);
     };
     if (!this.runDefaultValueExpression(runner, values, properties, func)) {
       func(defaultValue);
@@ -1938,19 +1936,22 @@ export class Question extends SurveyElement<Question>
   protected convertFuncValuetoQuestionValue(val: any): any {
     return Helpers.convertValToQuestionVal(val);
   }
-  private runExpressionSetValue(val: any, setFunc?: (val: any) => void): void {
+  private runExpressionSetValueCore(val: any, setFunc?: (val: any) => void): void {
     setFunc(this.convertFuncValuetoQuestionValue(val));
   }
+  private runExpressionSetValue(val: any): void {
+    this.runExpressionSetValueCore(val, (val: any): void => {
+      if (!this.isTwoValueEquals(this.value, val)) {
+        this.value = val;
+      }
+    });
+  }
   private runDefaultValueExpression(runner: ExpressionRunner, values: HashTable<any> = null,
     properties: HashTable<any> = null, setFunc?: (val: any) => void): boolean {
     if (!runner || !this.data) return false;
     if (!setFunc) {
       setFunc = (val: any): void => {
-        this.runExpressionSetValue(val, (val: any): void => {
-          if (!this.isTwoValueEquals(this.value, val)) {
-            this.value = val;
-          }
-        });
+        this.runExpressionSetValue(val);
       };
     }
     if (!values) values = this.defaultValueExpression ? this.data.getFilteredValues() : {};

tests/surveyquestiontests.ts

@@ -6938,6 +6938,43 @@ QUnit.test("defaultValueExpressions, currentDate() and 'date'+'datetime-local' i
   assert.equal(q2.displayValue.indexOf(prefix), 0, "datetime-local has year");
   assert.equal(q2.displayValue.indexOf(":") < 0, true, "date has no time");
 });
+QUnit.test("setValueExpression, currentDate() and 'date'+'datetime-local' inputtype, Bug#8471", function (
+  assert
+) {
+  const survey = new SurveyModel({
+    elements: [{
+      "name": "q1",
+      "type": "text",
+      "inputType": "datetime-local",
+      "setValueIf": "{q3} > 10",
+      "setValueExpression": "currentDate()"
+    },
+    {
+      "name": "q2",
+      "type": "text",
+      "inputType": "date",
+      "setValueIf": "{q3} > 10",
+      "setValueExpression": "currentDate()"
+    },
+    { "name": "q3", "type": "text" }
+    ] });
+  const d = new Date();
+  let prefix = d.getFullYear() + "-";
+  const q1 = survey.getQuestionByName("q1");
+  const q2 = survey.getQuestionByName("q2");
+  assert.equal(q1.isEmpty(), true, "q1 is Empty");
+  assert.equal(q2.isEmpty(), true, "q2 is Empty");
+  survey.setValue("q3", 11);
+  assert.equal(q1.isEmpty(), false, "q1 is not Empty");
+  assert.equal(q2.isEmpty(), false, "q2 is not Empty");
+  assert.ok(q1.displayValue, "q1 has displayValue");
+  assert.ok(q2.displayValue, "q2 has displayValue");
+  assert.equal(q1.inputType, "datetime-local", "inputType is correct");
+  assert.equal(q1.displayValue.indexOf(prefix), 0, "datetime-local has year");
+  assert.equal(q1.displayValue.indexOf(":") > 0, true, "datetime-local has time");
+  assert.equal(q2.displayValue.indexOf(prefix), 0, "datetime-local has year");
+  assert.equal(q2.displayValue.indexOf(":") < 0, true, "date has no time");
+});
 QUnit.test("Supporting showCommentArea property, Bug#5479", function (
   assert
 ) {