洋葱数学技术博客

vibrant.js 是一个自动提取图片重要颜色的库.
咱们前端图标可能用到.

AppIntro is an Android app introduction maker. Developers can make cool introduction or new user guidance easily with a few lines of code.

PDFmake is an amazing tool to print PDF file from client/server side using pure js code. Like this,

Real-Time video chat solution for WEB browser.

WebRTC is a free, open project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

原文
在页面中插入如下meta标签，可以使得用户使用360、搜狗等双内核浏览器的时候自动使用极速内核（WebKit内核）。

Redis is another NoSQL database like Mongodb. As the site describes, it is a “key-value cache and store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs.”

Please, appreciate the cool CSS/JS effects made by CodyHouse.

1. Animated Page Transition

tabris.js is another tool for javascript developers to build iOS/Android native app. It seems more simple than its counterparts.

clusterize.js is a plugin to boost large data display in frontend. I was shocked when trying their demo, it loaded and scrolled a table about 500,000 rows easily.

开发数据平台的时候遇到了性能瓶颈；
当我用lodash的uniq方法去重一个很大的数组的时候，性能非常的差，
后来在stackoverflow上找到了很多神奇的去重技巧：

例如我目前用的快得让人无法相信的奇怪算法：

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var array = [1, 2, 3, 4, 5, 6, 2, 3, 4];
var obj = {};
array.forEach(function(id){obj[id] = true});
array = Object.keys(obj);