jikeytang

如何给数字补充固定位数前导0？
比如3前面补3位0，结果为0003。
4前面补2位0,结果为004。


PS:
1. 回复时注意加上下面这句话，才会有语法高亮或格式缩进。
```javascript
// you code
```

subchen

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

willerce

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]);
            }

kevinkindom

Python Socket 编程详细介绍

Python 提供了两个基本的 socket 模块：

• Socket 它提供了标准的BSD Socket API。
• SocketServer 它提供了服务器重心，可以简化网络服务器的开发。

下面讲解下 Socket模块功能。

Socket 类型

subfuzion

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

javilobo8

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);

treyhuffine

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);
  }

getify

Some things that are "better" with this BetterPromise implementation:

• BetterPromise # then(..) accepts a BetterPromise (or Promise) instance passed directly, instead of requiring a function to return it, so that the promise is linked into the chain.

  var p = BetterPromise.resolve(42);
  
  var q = Promise.resolve(10);
  
  p.then(console.log).then(q).then(console.log);