解决ajax缓存的三个方法
有三种办法:
1、加个随机数
xmlHttp.open("GET", "ajax.asp?now=" + new Date().getTime(), true);
2、在要异步获取的asp页面中写一段禁止缓存的代码:
Response.Buffer =True
Response.ExpiresAbsolute =Now() - 1
Response.Expires=0
Response.CacheControl="no-cache"
3、在ajax发送请求前加上xmlHTTP.setRequestHeader("If-Modified-Since","0");可以禁止缓存
xmlHTTP.open("get", URL, true);
xmlHTTP.onreadystatechange = callHTML;
xmlHTTP.setRequestHeader("If-Modified-Since","0");
xmlHTTP.send();
1、加个随机数
xmlHttp.open("GET", "ajax.asp?now=" + new Date().getTime(), true);
2、在要异步获取的asp页面中写一段禁止缓存的代码:
Response.Buffer =True
Response.ExpiresAbsolute =Now() - 1
Response.Expires=0
Response.CacheControl="no-cache"
3、在ajax发送请求前加上xmlHTTP.setRequestHeader("If-Modified-Since","0");可以禁止缓存
xmlHTTP.open("get", URL, true);
xmlHTTP.onreadystatechange = callHTML;
xmlHTTP.setRequestHeader("If-Modified-Since","0");
xmlHTTP.send();