diff --git a/src/entries/chunks/model.ts b/src/entries/chunks/model.ts
index 742c3715d7..7b36bea528 100644
--- a/src/entries/chunks/model.ts
+++ b/src/entries/chunks/model.ts
@@ -278,6 +278,7 @@ export {
   sanitizeEditableContent,
   IAttachKey2clickOptions
 } from "../../utils/utils";
+export { InputMaskBase } from "../../mask/mask";
 export * from "../../utils/cssClassBuilder";
 
 export { surveyCss, defaultV2Css, defaultV2ThemeName } from "../../defaultCss/defaultV2Css";
diff --git a/src/mask/mask.ts b/src/mask/mask.ts
new file mode 100644
index 0000000000..971ada38c3
--- /dev/null
+++ b/src/mask/mask.ts
@@ -0,0 +1,63 @@
+export class InputMaskBase {
+  placeholderChar = "_";
+
+  definitions: { [key: string]: RegExp } = {
+    "9": /[0-9]/,
+    "a": /[a-zA-Z]/,
+    "*": /[a-zA-Z0-9]/
+  }
+
+  constructor(private mask: string) { }
+
+  getMaskedString(str: string): string {
+    let result = "";
+    let strIndex = 0;
+    for(let maskIndex = 0; maskIndex < this.mask.length; maskIndex++) {
+      const currentDefinition = this.definitions[this.mask[maskIndex]];
+      if(currentDefinition) {
+        if(strIndex < str.length && str[strIndex].match(currentDefinition)) {
+          result += str[strIndex];
+        } else {
+          result += this.placeholderChar;
+        }
+        strIndex++;
+      } else {
+        result += this.mask[maskIndex];
+      }
+    }
+    return result;
+  }
+
+  getUnmaskedValue(str: string): string {
+    let result = "";
+    for(let index = 0; index < this.mask.length; index++) {
+      const currentDefinition = this.definitions[this.mask[index]];
+      if(currentDefinition) {
+        if(str[index].match(currentDefinition)) {
+          result += str[index];
+        } else {
+          result = "";
+          break;
+        }
+      }
+    }
+    return result;
+  }
+
+  updateMaskedString(str: string): string {
+    let result = "";
+    for(let index = 0; index < this.mask.length; index++) {
+      const currentDefinition = this.definitions[this.mask[index]];
+      if(currentDefinition) {
+        if(str[index].match(currentDefinition)) {
+          result += str[index];
+        } else {
+          result += this.placeholderChar;
+        }
+      } else {
+        result += this.mask[index];
+      }
+    }
+    return result;
+  }
+}
\ No newline at end of file
diff --git a/tests/entries/test.ts b/tests/entries/test.ts
index ac3ea7def4..44b5fdeb38 100644
--- a/tests/entries/test.ts
+++ b/tests/entries/test.ts
@@ -64,6 +64,7 @@ export * from "../components/liststests";
 export * from "../responsivityTests";
 export * from "../svgRegistryTests";
 export * from "../utilstests";
+export * from "../mask_pattern_tests";
 export * from "../stylesManagerTests";
 export * from "../headerTests";
 
diff --git a/tests/mask_pattern_tests.ts b/tests/mask_pattern_tests.ts
new file mode 100644
index 0000000000..0233471895
--- /dev/null
+++ b/tests/mask_pattern_tests.ts
@@ -0,0 +1,48 @@
+import { InputMaskBase } from "../src/mask/mask";
+
+export default QUnit.module("Pattern mask");
+
+const mask = "+9(999)-999-99-99";
+
+QUnit.test("get masked valid text", function(assert) {
+  const inputMask = new InputMaskBase(mask);
+  assert.equal(inputMask.getMaskedString(""), "+_(___)-___-__-__");
+  assert.equal(inputMask.getMaskedString("1"), "+1(___)-___-__-__");
+  assert.equal(inputMask.getMaskedString("1234"), "+1(234)-___-__-__");
+  assert.equal(inputMask.getMaskedString("1234567"), "+1(234)-567-__-__");
+  assert.equal(inputMask.getMaskedString("12345678910"), "+1(234)-567-89-10");
+});
+
+QUnit.test("get masked invalid text", function(assert) {
+  const resultMaskedText = "+_(___)-___-__-__";
+  const inputMask = new InputMaskBase(mask);
+  assert.equal(inputMask.getMaskedString(""), resultMaskedText);
+  assert.equal(inputMask.getMaskedString("a"), resultMaskedText);
+  assert.equal(inputMask.getMaskedString("@"), resultMaskedText);
+  assert.equal(inputMask.getMaskedString("."), resultMaskedText);
+  assert.equal(inputMask.getMaskedString("123456789101112"), "+1(234)-567-89-10");
+});
+
+QUnit.test("get unmasked value", function(assert) {
+  const inputMask = new InputMaskBase(mask);
+  assert.equal(inputMask.getUnmaskedValue("+_(___)-___-__-__"), "");
+  assert.equal(inputMask.getUnmaskedValue("+1(234)-567-__-__"), "");
+  assert.equal(inputMask.getUnmaskedValue("+1(234)-567-89-10"), "12345678910");
+});
+
+QUnit.test("get unmasked invalid value", function(assert) {
+  const inputMask = new InputMaskBase(mask);
+  assert.equal(inputMask.getUnmaskedValue("+.(___)-___-__-__"), "");
+  assert.equal(inputMask.getUnmaskedValue("+a(bcd)-567-__-__"), "");
+  assert.equal(inputMask.getUnmaskedValue("++(234)-567-89-10"), "");
+  assert.equal(inputMask.getUnmaskedValue("+1(234)-567-__-10"), "");
+});
+
+QUnit.test("update masked value", function(assert) {
+  const resultMaskedText = "+1(234)-567-__-__";
+  const inputMask = new InputMaskBase(mask);
+  assert.equal(inputMask.updateMaskedString("+1(234)-567-__-__"), resultMaskedText);
+  assert.equal(inputMask.updateMaskedString("+1(234)-567-ab-__"), resultMaskedText);
+  assert.equal(inputMask.updateMaskedString("+1(234)-567-.,-__"), resultMaskedText);
+  assert.equal(inputMask.updateMaskedString("+1(234)-567-!?-__"), resultMaskedText);
+});