history:保存当前窗口打开后成功访问过的url历史记录栈
history.go(n):前进n步
前进一步:history.go(1);
后退一步:history.go(-1);
刷新:history.go(0);
1 <!DOCTYPE html> 2 <html> 3 <head lang="en"> 4 <meta charset="UTF-8"> 5 <title></title> 6 </head> 7 <body> 8 <div> 9 <a href="2-1.html">1</a> 10 <a href="2-2.html">2</a> 11 <a href="2-3.html">3</a> 12 </div> 13 <br/> 14 <div> 15 <a href="javascript:history.go(0)">刷新</a> 16 <a href="javascript:history.go(-2)">后退二次</a> 17 <a href="javascript:history.go(-1)">后退一次</a> 18 <a href="javascript:history.go(1)">前进一次</a> 19 <a href="javascript:history.go(2)">前进两次</a> 20 </div> 21 </body> 22 </html>