hjzheng

前端导出 excel 说明

利用js-xlsx来导出excel,纯前端实现实现

参考: 如何使用JavaScript实现纯前端读取和导出excel文件

hjzheng

axios({
  url: 'http://localhost:5000/static/example.pdf',
  method: 'GET',
  responseType: 'blob', // important
}).then((response) => {
  const url = window.URL.createObjectURL(new Blob([response.data]));
  const link = document.createElement('a');
  link.href = url;
  link.setAttribute('download', 'file.pdf');
  document.body.appendChild(link);

hjzheng

class PromiseSimple {
  constructor(executionFunction) {
    this.promiseChain = [];
    this.handleError = () => {};

    this.onResolve = this.onResolve.bind(this);
    this.onReject = this.onReject.bind(this);

    executionFunction(this.onResolve, this.onReject);
  }

hjzheng

import Service from 'path/to/service';
import 'jasmine-ajax'

describe('Service', () => {
  let request, promise;
  let instance = Service;
  let payload = {foo:'bar'};
  let path = '/path';
  let callback = jasmine.createSpy('callback');

hjzheng

git stash用于保存和恢复工作进度

• git stash

  保存当前的工作进度。会分别对暂存区和工作区的状态进行保存

• git stash save "message..."

这条命令实际上是第一条 git stash 命令的完整版

hjzheng

// Flyweight.js - Copyright Addy Osmani, 2012.
// Consider public domain
// My implementation in JS of this:
// http://en.wikipedia.org/wiki/Flyweight_pattern

// Simulate pure virtual inheritance/'implement' keyword for JS
Function.prototype.implementsFor = function (parentClassOrObject) {
    if (parentClassOrObject.constructor == Function) {
        // Normal Inheritance 
        this.prototype = new parentClassOrObject;

hjzheng

AngularJS Directive Attribute Binding Explanation

When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.

1. Raw Attribute Strings

   <div my-directive="some string" another-param="another string"></div>

hjzheng

var gulp = require('gulp');
var source = require('vinyl-source-stream'); // Used to stream bundle for further handling
var browserify = require('browserify');
var watchify = require('watchify');
var gulpif = require('gulp-if');
var uglify = require('gulp-uglify');
var streamify = require('gulp-streamify');
var notify = require('gulp-notify');
var concat = require('gulp-concat');
var cssmin = require('gulp-cssmin');

hjzheng

var Loader = (function () {
    function Loader(options) {
        this.options = options;
        if (resource.scripts && resource.baseUrl) {
            for (var i = 0; i < this.options.scripts.length; i++) {
                this.load('js', this.options.scripts[i]);
            }
            for (var i = 0; i < this.options.stylesheets.length; i++) {
                this.load('css', this.options.stylesheets[i]);
            }

hjzheng

//usage
withAdvice.call(targetObject);

//mixin augments target object with around, before and after methods
//method is the base method, advice is the augmenting function
withAdvice: function() {
  ['before', 'after', 'around'].forEach(function(m) {
    this[m] = function(method, advice) {
      if (typeof this[method] == 'function') {
        return this[method] = fn[m](this[method], advice);