要实现这个效果很简单，只需要加一行css代码即可：
-webkit-overflow-scrolling : touch;
可用以下网页测试：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <meta charset="utf-8" /> <title>scroll</title> <style type="text/css"> .container { width : 300px; height : 50%; -webkit-box-sizing : border-box; position : relative; overflow-y : auto; background-color : cyan; -webkit-overflow-scrolling : touch; /* liuhx:可以把这整行注释掉对比差别 */ } ul { height: 50px; } </style> </head><body> <div align="center"> <nav class="container"> <ul>1</ul> <ul>2</ul> <ul>3</ul> <ul>4</ul> <ul>5</ul> <ul>6</ul> <ul>7</ul> <ul>8</ul> <ul>9</ul> <ul>10</ul> <ul>11</ul> <ul>12</ul> <ul>13</ul> <ul>14</ul> <ul>15</ul> <ul>16</ul> <ul>17</ul> <ul>18</ul> <ul>19</ul> <ul>20</ul> </nav> </div></body></html>
