郵編驗證器

使用方法

1. Select a country from the searchable dropdown。
2. Enter a postal code in the code field; the placeholder shows an example for the selected country。
3. The tool instantly shows the official regex pattern and a format example。
4. Read the green 'Valid' or red 'Invalid' result below。

範例

• Selecting United States (US) and entering 90210 returns Valid; entering 9021 returns Invalid。
• Selecting Japan (JP) and entering 100-0001 returns Valid against the pattern \d{3}-\d{4}。