fwon

// reducer
function todosReducer(state, action) {
  switch (action.type) {
    case 'add':
      return [...state, {
        text: action.text,
        completed: false
      }];
    // ... other actions ...
    default:

fwon

function getByteLen(normal_val) {
    // Force string type
    normal_val = String(normal_val);

    var byteLen = 0;
    for (var i = 0; i < normal_val.length; i++) {
        var c = normal_val.charCodeAt(i);
        byteLen += c < (1 <<  7) ? 1 :
                   c < (1 << 11) ? 2 :
                   c < (1 << 16) ? 3 :

fwon

function deepClone(obj, hash = new Map()) {
    if (Object(obj) !== obj) return obj; // primitives
    if (hash.has(obj)) return hash.get(obj); // cyclic reference
    var result = Array.isArray(obj) ? []
               : obj.constructor ? new obj.constructor() : {};
    hash.set(obj, result);
    if (obj instanceof Map)
        Array.from(obj, ([key, val]) => result.set(key, deepClone(val, hash)) );
    return Object.assign(result, ...Object.keys(obj).map (
        key => ({ [key]: deepClone(obj[key], hash) }) ));

fwon

crypto.createHash('md5').update(text).digest('hex')

fwon

https://github.com/ded/klass/blob/master/klass.js

fwon

/**
 * Hilo
 * Copyright 2015 alibaba.com
 * Licensed under the MIT License
 */

/**
 * @language=en
 * Create Example Class:
 * <pre>

fwon

//Lets create a simple particle system in HTML5 canvas and JS

//Initializing the canvas
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");

//Canvas dimensions
var W = 500; var H = 500;

//Lets create an array of particles

fwon

//简易模板引擎实现
//http://krasimirtsonev.com/blog/article/Javascript-template-engine-in-just-20-line
//https://segmentfault.com/a/1190000005705169
var TemplateEngine = function(html, options) {
    var re = /<%([^%>]+)?%>/g, reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g, code = 'var r=[];\n', cursor = 0, match;
    var add = function(line, js) {
        js? (code += line.match(reExp) ? line + '\n' : 'r.push(' + line + ');\n') :
            (code += line != '' ? 'r.push("' + line.replace(/"/g, '\\"') + '");\n' : '');
        return add;
    }

fwon

// This function:

function foo() {
  var x = 5;
  var y = 6;
  debugger;
  return x + y;
}

fwon

document.addEventListener('WeixinJSBridgeReady', function(){
	//如果执行到这块的代码,就说明是在微信内部浏览器内打开的.
	alert('当前页面在微信内嵌浏览器中打开!');
});