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zheng mingyou zikkeung

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zikkeung / 高频执行事件、方法的防抖.js
Last active November 26, 2019 07:26
|-|{"files":{"高频执行事件、方法的防抖.js":{"env":"js"}},"tag":"Uncategorized"}
// 取自 UnderscoreJS 实用框架
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
@zikkeung
zikkeung / JavaScript绝句的小研究
Last active November 26, 2019 07:25
|-|{"files":{"JavaScript绝句的小研究":{"env":"js"},"Javascript绝句":{"env":"plain"}},"tag":"Uncategorized"}
1. 取整同时转成数值型
'10.567890'|0
//结果: 10
'10.567890'^0
//结果: 10
-2.23456789|0
//结果: -2
~~-2.23456789
//结果: -2
@zikkeung
zikkeung / Html5實現末上傳圖片即可預覽.html
Last active November 26, 2019 07:25
|-|{"files":{"Html5實現末上傳圖片即可預覽.html":{"env":"plain"},"readAsDataURL":{"env":"plain"}},"tag":"Uncategorized"}
<!DOCTYPE html>
<html>
<head>
<title>Image preview on realtime</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
</head>
<body>
<h3>即時預覽Image</h3>
@zikkeung
zikkeung / javascript检测网络连接是否正常.js
Created January 20, 2014 02:01
javascript检测网络连接是否正常
function doesConnectionExist(file) {
var xhr = new XMLHttpRequest();
var randomNum = Math.round(Math.random() * 10000);
xhr.open('HEAD', file + "?rand=" + randomNum, false);
try {
xhr.send();
if (xhr.status >= 200 && xhr.status < 304) {
@zikkeung
zikkeung / gist:7734060
Created December 1, 2013 13:55 — forked from lucasfais/gist:1207002

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T go to file
⌘⌃P go to project
⌘R go to methods
⌃G go to line
⌘KB toggle side bar
⌘⇧P command prompt
@zikkeung
zikkeung / gist:6338424
Created August 26, 2013 05:59
CSS 居中大全
<center>
不建议用了。
text-align:center
在父容器里水平居中 inline 文字，或 inline 元素
@zikkeung
zikkeung / 在Finder标题栏显示当前文件夹路径
Created August 21, 2013 05:24
在Finder标题栏显示当前文件夹路径
打开“终端”（应用程序->实用工具），输入以下两条命令：
defaults write com.apple.finder _FXShowPosixPathInTitle -bool TRUE;killall Finder
@zikkeung
zikkeung / 在Mac上开关隐藏文件的显示
Created August 21, 2013 05:27
defaults write com.apple.finder AppleShowAllFiles TRUE
killall Finder
把 TRUE 换曾 FALSE 就可以关闭显示隐藏文件。
@zikkeung
zikkeung / gist:6289779
Created August 21, 2013 02:35 — forked from hlb/gist:6076665
@zikkeung
zikkeung / 基本 HTML Meta 标签
Created August 19, 2013 09:34
#声明文档使用的字符编码是 UTF-8
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
##HTML5 中简化为
<meta charset='utf-8'>
#使用关键词描述一个网页的属性，SEO 必选
<meta name="keywords" content="your, tags" />
#使用一段自然语言描述一个网页的属性，SEO 必选