<!DOCTYPE html>
<meta charset="utf-8">
<form action="">
<input type="tel" name="num" title="10 wei" pattern="^d{10$}">
type 等于 tel 匹配用正则表达式,title是提示
<input type="submit">
</form>
<!DOCTYPE html>
<meta charset="utf-8">
<form action="">
<input type="tel" name="num" title="10 wei" pattern="^d{10$}">
type 等于 tel 匹配用正则表达式,title是提示
<input type="submit">
</form>