HTML -Formatdatum
<input type="date" name="begin"
placeholder="dd-mm-yyyy" value=""
min="1997-01-01" max="2030-12-31">
VasteMonde
<input type="date" name="begin"
placeholder="dd-mm-yyyy" value=""
min="1997-01-01" max="2030-12-31"><time datetime="1914"> <!-- means the year 1914 -->
<time datetime="1914-12"> <!-- means December 1914 -->
<time datetime="1914-12-20"> <!-- means 20 December 1914 -->
<time datetime="12-20"> <!-- means 20 December any year -->
<time datetime="1914-W15"> <!-- means week 15 of year 1914 -->