var a = [1, 2],
b = [3, 4];
console.log(a.concat(b))HTML错误的嵌套例如在p里嵌套div那修改div的innerHTML属性也会出现错误
% & + 编码这几个符号
% %25
+ %2B
& %26或者：encodeURIComponent
// 类似于HTTP跳转，浏览器无当前页面的历史记录
window.location.replace("http://type.so");
// 浏览器有历史记录
window.location.href = "http://type.so";$str = 'something';
function infunction() {
echo $str; //报错
}
function infunc() {
$str = 'one two three';
echo $str; //one two three
}
echo $str; //something
//不搭嘎啊var str = 'something';
function infunction() {
console.log(str); //something
str = 'one two three';
}
console.log(str); //one two three
//想function里面的变量私有化，则需要var来定义str = 'something';
def infunction():
print(str) #something
def infunc():
print(str) #报错
str = 'one two three'
#在def中不对外部变量赋值时，外部变量可直接使用（global）
#一旦在def中对变量复制，def中的变量将会私有化（locale）use mydb;
source /var/www/data.sql;LOAD DATA INFILE 'path/to/file.txt'
INTO TABLE `tablename`
FIELDS TERMINATED BY ',';#时间戳 to 标准时间
FROM_UNIXTIME(xxxxxxxxxx);
#标准时间 to 时间戳
UNIX_TIMESTAMP('YYYY-MM-DD HH:MM:SS'');mysql_upgrade -uroot -p使用的ajax长轮询 ajax long poll，为了便于使用，我将它封装成了一个jquery插件
(function($){
$.fn.extend({
visitors: function(options){
var defaults = {
script : "visitors/online.php",
timeout : 50000,
};
var options = $.extend(defaults, options);
return this.each(function(){
var holder = $(this);
refresh = function(sleep) {
var sleep = sleep ? sleep : 1000;
setTimeout('update()', sleep);
}
update = function() {
$.ajax({
url : options.script,
type : 'get',
dataType : 'json',
async : true,
cache : false,
timeout : options.timeout,
beforeSend : function() {
},
success : function(data) {
holder.html(data.num);
refresh(1000);
},
error : function() {
refresh(15000);
}
});
}
update();
});
}
});
})(jQuery);待续...
- 正数的补码与原码相同
- 负数的补码是对其原码逐位取反，但符号位（第一位）除外；然后整个数加1。
判断奇偶性
lambda x : x & 1取二进制数的第k位
lambda x, k : x >> k & 1二进制数k位清0
lambda x : x & ~ (1 << k)二进制数k位置1
lambda x : x | (1 << k)求平均值
lambda x, y : (x & y) + ((x ^ y) >> 1)判断是否为2的幂
lambda x : ((x & (x-1)) == 0) && (x != 0)交换两整数
a, b = 3, 4
a = a ^ b
b = b ^ a
a = a ^ b
print(a, b) #4 3Upload photos
$(function() {
var fileRemoved = false;
function reset() {
$("#fileInputQueue, #upload-tools").hide();
$("#status").empty().hide();
$("#doc-loading").hide();
}
$('#fileInput').uploadify({
uploader: 'static/js/uploadify/uploadify.swf',
script: 'uploadify.php',
buttonImg: 'static/image/button.png',
// rollover: true,
width: 100,
height: 30,
cancelImg: 'static/image/cancel.png',
// auto: false,
multi: true,
// method: 'POST',
fileDesc: 'Photo(*.jpg; *.jpeg; *.gif; *.png)',
fileExt: '*.jpg; *.jpeg; *.gif; *.png',
sizeLimit: 31457280,
// displayData: 'percentage',
scriptAccess: 'always',
scriptData: {
},
onSelect: function(event, queueID, fileObj) {
if (parseInt(fileObj.size) > parseInt(31457280)) {
size_limit = Math.round(31457280 / 1048576 * 100000) / 100000;
//上传文件大小超出限制
fileRemoved = true;
return false;
}
$("#fileInputQueue, #upload-tools").fadeIn();
if (!fileRemoved) {
//成功选择文件
} else {
//...
}
},
onCancel: function() {
if ($('.uploadifyQueueItem').size() === 1) {
reset();
}
},
onClearQueue: function() {
reset();
},
onComplete: function(evt, queueID, fileObj, response, data) {
//console.log(eval('(' + response + ')').pid);
//$.parseJSON
$("#fileInput" + queueID + " .uploadifyProgressBar").css("background", "#6AE16A");
$("#fileInput" + queueID + " .cancel").hide();
return false;
},
onAllComplete: function(evt, queueID, fileObj, response, data) {
//全部上传成功
$("#upload-tools, #doc-loading").hide();
}
});
$('#upload-button').click(function() {
$('#fileInput').uploadifyUpload();
$('#upload-tools').hide();
$("#fileInputQueue").before($("#doc-loading").show());
});
});.uploadifyQueue{border:1px solid #CCC;display:none;max-height:300px;margin:16px 0 24px 0;overflow:auto;zoom:1;}
.uploadifyQueueItem{border-bottom:1px solid #E2E2E2;font-weight:bold;padding:8px;}.uploadifyQueueItem .cancel{float:right;}
.uploadifyQueueItem:last-child{border-bottom:0;}
.uploadifyError{background-color:#eeacac !important;color:#cc0000 !important;}
.uploadifyProgress{background:#EEE;height:6px;margin-top:8px;overflow:hidden;width:100%;zoom:1;-moz-border-radius:2px;-webkit-border-radius:2px;border-radius:2px;-moz-box-shadow:inset 0 0 1px rgba(0, 0, 0, 0.05);-webkit-box-shadow:inset 0 0 1px rgba(0, 0, 0, 0.05);box-shadow:inset 0 0 1px rgba(0, 0, 0, 0.05);}
.uploadifyProgressBar{background:#333;height:6px;margin-left:-1px;width:1px;}
a.delete-item{background:url('static/images/icons/delete.png') center left no-repeat;padding-left:18px;line-height:18px;}就是添加一个自定义的层，使用方法(初始化一个)：
new FastMarker();
function FastMarker(latlng, options) {
this.latlng = latlng;
this.options = options || {};
}
FastMarker.prototype = new google.maps.OverlayView();
FastMarker.prototype.onAdd = function(map) {
var div = document.createElement('div');
if (this.options.className) div.className = this.options.className;
if (this.options.html) div.innerHTML = this.options.html;
if (this.options.dom) div.appendChild(this.options.dom);
if (this.options.id) div.id = this.options.id;
div.style.position = 'absolute';
this.map = map;
this.div = div;
var events = ['click', 'dblclick', 'contextmenu', 'mousedown', 'mouseup', 'mouseover', 'mouseout', 'mousewheel', 'DOMMouseScroll'];
for (var i = 0; i < events.length; i++)
google.maps.event.addDomListener(div, events[i], this.stop, false);
var panes = this.getPanes();
panes.overlayLayer.appendChild(div);
};
FastMarker.prototype.draw = function(force) {
var point = this.getProjection().fromLatLngToDivPixel(this.latlng);
this.div.style.top = (point.y) + 'px';
this.div.style.left = (point.x) + 'px';
};
FastMarker.prototype.onRemove = function() {
google.maps.event.clearInstanceListeners(this.div);
this.div.parentNode.removeChild(this.div);
this.div = null;
};
FastMarker.prototype.getPosition = function() {
return this.latlng;
};
FastMarker.prototype.stop = function(e) {
if (navigator.userAgent.toLowerCase().indexOf('msie') != -1 && document.all) {
window.event.cancelBubble = true;
window.event.returnValue = false;
} else {
e.stopPropagation();
}
};这里要说的是忘记root密码之后怎么去改密码。
killall -TERM mysqld #关闭mysql进程
/usr/local/mysql/bin/mysqld_safe --skip-grant-tables --skip-networking & #安全模式启动mysql
mysql #直接mysql命令进去注意该模式下进去是没有grant权限的，我们只能直接对表进行操作，下面是sql语句
USE mysql;
UPDATE user set password=password('new password') WHERE user='root';
FLUSH PRIVILEGES; #刷新权限
但是遇到徐老师这样的草泥马，把表清空了，N多的字段啊，果断从本地mysql的表里面搞出sql语句，插进去：
USE mysql;
INSERT INTO `user` VALUES ('%', 'root', PASSWORD('your password'), 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', '', '', '', '', 0, 0, 0, 0);
INSERT INTO `user` VALUES ('localhost', 'root', PASSWORD('your password'), 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', '', '', '', '', 0, 0, 0, 0);
FLUSH PRIVILEGES; #刷新权限chmod +x hooks/pre-commit./hooks/pre-commit
REPOS="$1"
TXN="$2"
SVNLOOK=/usr/bin/svnlook
LOGMSG=`$SVNLOOK log -t $TXN $REPOS | wc -m`
if [ "$LOGMSG" -lt 48 ]
then
echo "\n至少输入4个汉字" >&2
exit 1
fi
exit 0enable-auto-props = yes
[auto-props]
*.php = svn:keywords=Date Author Id Revision HeadURL
*.css = svn:keywords=Date Author Id Revision HeadURL
*.html = svn:keywords=Date Author Id Revision HeadURL
*.js = svn:keywords=Date Author Id Revision HeadURLsvn co file:///var/www/svn/sandbox /var/www/html/
#./hooks/pre-commit
svn up /var/www/html/