pacman error: audit: signature from is unknown trust
使用 pacman 更新系统报错怎么办？更新是个麻烦事，长时间不更新一更新就容易出各种问题。pacman -Syu error: audit: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trusterror: audit: signature from "Levente Polyak ...
基于 HTML5 的 EventSource 实时推送实现
本文介绍 Comet 的 EventSource 实现方式，EventSource 对象只是对数据格式进行了简单的封装。服务端加上 event-stream 的头声明，数据以事件流的方式传递，保持长连接。先上代码吧，后端代码示例 chat.php：if (isset($_REQUEST['message'])) { file_put_contents('/tmp/message.txt', time() ....
JavaScript实现图片懒加载非可视区域延迟加载
nction(){ viewport = getViewport(); }; var loadImg = function(){ if( count >= m.length ){ /* remove event */ if( window.addEventListener ){ document.removeEventListener( 'scroll', loadImg, false ); }else i...
手机站建设HTML5触摸屏touch事件使用介绍
触发 touchcancel：系统取消touch事件的时候触发 事件绑定，代码示例： <script> var obj = document.getElementById('id'); obj.addEventListener('touchstart', touchStart, false); obj.addEventListener('touchmove', touchMove, false); obj....
MySQL8 关闭 binlog
ndex | /var/lib/mysql/binlog.index | | log_bin_trust_function_creators | OFF | | log_bin_use_v1_row_events | OFF | +---------------------------------+-----------------------------+ 5 rows in set (0.11 sec)...
kafka 的一些命令
-bootstrap-server localhost:9092消费 from beginning bin/kafka-console-consumer.sh --topic quickstart-events --from-beginning --bootstrap-server localhost:9092生产bin/kafka-console-producer.sh --topic quickst...
Debian 10 安装 MySQL Server
ate_view_priv: N Show_view_priv: N Create_routine_priv: N Alter_routine_priv: N Create_user_priv: N Event_priv: N Trigger_priv: N Create_tablespace_priv: N ssl_type: ssl_cipher: 0x x509_issuer: 0x x509_sub...
css big event gray how to achieve
针对大事件灰色效果，CSS 的工作量可谓不小，可 CSS3 来了，只需一行代码搞定，其实就是这么简单，无需做什么准备。.big-event-gray { filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); /* -webkit-filter: grayscale(100%); */ -moz-filter: grayscale...
使用Form Iframe Request取代Ajax技术和Jquery的Ajax方法
orm.parentNode.removeChild(c_form); c_iframe.parentNode.removeChild(c_iframe); }; if(c_iframe.attachEvent){ c_iframe.attachEvent("onload", function(){ loadedDo(); }); } else { c_iframe.onload = function(){...
HTML5 history API改变浏览器地址无需hash和刷新加载页面
new history entry created by pushState(). Whenever the user navigates to the new state, a popstate event is fired, and the state property of the event contains a copy of the history entry's state object. ...