formの項目を必須入力にしたくて調べた時の備忘録
項目にrequireをつける
<input type="text" required>
index.html
<!DOCTYPE html> <html> <body> <form> <input type="text" required> <button type="submit">button</button> </form> </body> </html> |
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Introduction Regular expressions are a powerful tool that can be used to extract data from text. In Google Sheets, regular expressions ca...