只记录一下比较有趣的知识点。
一：新标签
1.选项列表datalist
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 <input type="text" list="sg"> 9 <datalist id="sg"> 10 <option value="apple">苹果</option> 11 <option value="banna">香蕉</option> 12 </datalist> 13 </body> 14 </html>
2.效果
3.元素分类fieldset
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 <fieldset> 9 <legend>用户登录</legend> 10 用户：<input type="text"><br> 11 密码：<input type="password"> 12 </fieldset> 13 </body> 14 </html>
4.效果
二：表单属性
1.placeholder
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 用户名：<input type="text" placeholder="请输入"> 9 </body> 10 </html>
2.效果
3.autofocus
自动对焦
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 用户名：<input type="text" placeholder="请输入" autofocus="autofocus"> 9 </body> 10 </html>
4.效果
5.multiple多选
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 上传：<input type="file" multiple> 9 </body> 10 </html>
6.
原文：https://www.cnblogs.com/juncaoit/p/11161297.html