joecliff

var Q = require('q');

function createPromise(data) {
    var deffered = Q.defer();
    setImmediate(deffered.resolve.bind(deffered, data));
    return deffered.promise;
};

/**
 * 第一步返回必须是promise，否则没有then...

joecliff

//最好总是使用带this绑定的q方法(相对保险)
Q.ninvoke(object, methodName, ...args); //直接执行
Q.nbind(nodeMethod, thisArg, ...args); //返回绑定参数后的方法

//不带直接绑定this作用域的，如果方法内用到了this，可能需要手动绑定
Q.nfcall(obj.method.bind(obj), ...args)
Q.nfapply(obj.method.bind(obj), args)
//其他类似 ...

joecliff

var CryptoJS = require("crypto-js");//replace this with script tag in browser env

var encrypted = CryptoJS.AES.encrypt("Message", "Secret Passphrase").toString();
console.log(encrypted);

var decrypted = CryptoJS.AES.decrypt(encrypted, "Secret Passphrase").toString(CryptoJS.enc.Utf8);
console.log(decrypted);

joecliff

var CryptoJS = require("crypto-js");//replace thie with script tag in browser env

//encrypt
var rawStr = "hello world!";
var wordArray = CryptoJS.enc.Utf8.parse(rawStr);
var base64 = CryptoJS.enc.Base64.stringify(wordArray);
console.log('encrypted:', base64);

//decrypt
var parsedWordArray = CryptoJS.enc.Base64.parse(base64);

joecliff

/**
 * cryptojs use WordArray (CryptoJS.lib.WordArray) as parameter/result frequently.
 *    A WordArray object represents an array of 32-bit words. When you pass a string,
 * it's automatically converted to a WordArray encoded as UTF-8.
 */

var CryptoJS = require("crypto-js");

// convert String to WordArray
var wordArray = CryptoJS.enc.Utf8.parse('Hello, World!');

joecliff

var request = require('request');

function setDownloadName(req, res, fileName) {
    var userAgent = (req.headers['user-agent'] || '').toLowerCase();
    if (userAgent.indexOf('chrome') > -1) {
        res.setHeader('Content-Disposition', 'attachment; filename=' + encodeURIComponent(fileName));
    } else if (userAgent.indexOf('firefox') >-1) {
        res.setHeader('Content-Disposition', 'attachment; filename*="utf8\'\'' + encodeURIComponent(fileName) + '"');
    } else {
        res.setHeader('Content-Disposition', 'attachment; filename=' + new Buffer(fileName).toString('binary'));

joecliff

/**
 * always put errorHandler in the last 'then' with a 'null' logic handler, 
 * so that all errors will be caught 
 */
someModule.promiseFunc()
    .then(function (data) {
        //TODO other logic
    })
    .then(null, errorHandler);

joecliff

'use strict';

var Q = require('q');

function prepare(data) {
//    return Q(data);
    return Q.reject(new Error('special error1'));
}
function judgeError(err) {
    console.log('catch: ', err);

joecliff

var num=12;
//12 -> c
var hex=12.toString(16);//same for other conditions

joecliff

'use strict';

function convertKeywordsToRegStr(keywords) {
    return '(' + keywords.trim().replace(/[^\w\u4E00-\u9FA5]+/g, '|') + ')';
}

function getHighlightFn(keywords, highlightClass) {
    var regexpStr = convertKeywordsToRegStr(keywords);
    if (regexpStr.length === 2) {
        return function (sourceText) {