文档：https://www.runoob.com/html/html5-form-input-types.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>input新功能html5</title>
</head>
<body>
<style>
/*控制提示文字用伪类*/
input::placeholder{
color:red;
}
</style>
文档：https://www.runoob.com/html/html5-form-input-types.html
<form >
<!-- 重点常用加载即把焦点给搜索：autofocus -->
<lable>搜索：</lable><input type="search" name="" id="" autofocus="autofocus"><br>
<label for=""></label><input type="tel" name="" id=""><br>
<!-- 重点常用：提示文本 -->
<label for="">邮箱：</label><input type="email" name="" id="" placeholder="请输入邮箱" required="required"><br>
<label for="">网址：</label><input type="url" name="" id=""><br>
<label for="">日期：</label><input type="date" name="" id=""><br>
<label for="">月份：</label><input type="month" name="" id=""><br>
<label for="">数字：</label><input type="number" name="" id=""><br>
<label for="">颜色：</label><input type="color" name="" id=""><br>
<!-- 重点常用：上传多个文件 -->
<label for="">上传多个文件：</label><input type="file" name="" id="" multiple="multiple"><br>
<input type="submit" value="提交">
</form>
</body>
</html>