How to limit the effective submission of a form or questionnaire before a certain date

1. Enable form submission verification

Open the form to be set, click the blank in the canvas to select the form, and click "Add formula" in the panel on the right ";

2. Set time comparison formula and error prompt

In the pop-up settings, enter the following formula. Or copy the following content directly in the formula boxCtrl+VPaste

{"text":"LT(TIMESTAMP(DATE(\"2022\", \"07\", \"10\")),TIMESTAMP(TODAY()))","marks":[],"isCmData":true}

Enter the text that needs to be prompted to the user after the date is exceeded in the blocking submission prompt text. If you need to modify the DATE, you can modify the three parameters in DATE, which are year, month, and day.

Click OK to save the formula, and then click save of the form to take effect.

Note that under the test, the time set in the formula needs to be one day longer than the actual time limit.