Selenium Date Picker Automation: Why clear() Fails and how to fix It (React DatePicker Case)

while automating a date picker recently, I ran into an issue that looks simple but wastes a lot of debugging time:

dateInputField.clear();

Instead of clearing the field, the calendar popup kept appearing, and sometimes the previous value came back automatically.

If you’ve worked with modern UI frameworks like React, this behaviour will feel familiar.

Let’s break down what’s happening and the reliable fix.

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The Problem

In many modern web apps, date pickers are not plain HTML inputs. They are React-Controlled components.

That means:

• The UI controls the input value.

• Clearing the field triggers internal events.

• The component re-populates the value or opens the calender popup.

So this code:

dateInputField.clear();
dateInputField.sendKeys("10/15/2023");

often fails because:

• Input regains focus.

• Calendar popup opens.

• Old value reaapears.

• Typing becomes unreliable.

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Why .clear() Doesn’t Work Realiably

clear() simulates user deletion, but React components:

• Listen to change events.

• Maintain internal state.

• Re-render inout values automatically.

So even after clearing, React sometimes restores the value.

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Reliable Solution: Clear Using JavaScript

The best solution is to bypass UI events and directly update the value.

Stable implementation

public void enterDate(String date) {
     wait.until(ExpectedConditions.elementToBeClickable(dateInputField));

     // Focus input
     dateInputField.click();

     // Clearing using JavaScript
     JavascriptExecutor js = (JavascriptExecutor) driver;
     js.executeScript("arguments[0].value='';", dateInputField);

     // Enter new date
     dateInputField.sendKeys(date);

     // Move focus away to close popup
     dateInputField.sendkeys(Keys.TAB);
}

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Why This Works

JavaScript directly modifies the value:

• No keyboard events fired

• No React re-render conflict

• No popup triggered

• Value updates cleanly

It behaves consistently across React-based pickers.

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Bonus: Debug Tip

To confirm the value actually changes:

System.out.println(dateInputField.getAttribute("value"));

Sometimes UI shows a value, but Selenium still sees old one.