一点清晨 Visionchen

## react native(简易封装标题栏)
### 使用teaset组件NavigationBar
```javascript
import React from 'react';
import { withNavigation } from 'react-navigation';
import {NavigationBar,Toast} from "teaset"
import observablemessagetime from '../../Mobx/messageTime'
import ShopsCartStore from "../../Mobx/ShoppingCartStore"
import observableOrder from '../../Mobx/ConfirmOrderStore'
import {inject, observer} from "mobx-react";

## react native(适配)
### 适配
```javascript
/**
 * Created by vision on 2018/9/12.
 */

"use strict"

import {Dimensions, StatusBar, Platform, PixelRatio} from 'react-native'

## react native(start运行容易中断)
### 找到目录
```javascript
node_modules\react-native\local-cli\server\server.js

  const startedCallback = logReporter => {
    logReporter.update({
      type: 'initialize_started',
      port: args.port,
      projectRoots: args.projectRoots,
    });

## mobx(购物车实现)
### 调用
```javascript
import { inject, observer } from 'mobx-react';

@observer
export default class ShoppingCart extends Component {
  constructor(props) {
    super(props);
    this.state = {
      all_checked:false,

## react native(保存图片,下载图片)
### 插件使用
```javascript
yarn add react-native-fs
react-native link react-native-fs
```
### 封装保存图片方法
```javascript
/**
 * Created by vision on 2018/8/27.
 */

## 深入js实现
### promise实现ajax
```JavaScript
var getJSON = function(url) {
  var promise = new Promise(function(resolve, reject){
    var client = new XMLHttpRequest();
    client.open("GET", url);
    client.onreadystatechange = handler;
    client.responseType = "json";
    client.setRequestHeader("Accept", "application/json");
    client.send();

## React Native安卓项目打包APK
使用Android studio生成一个key文件

```html
build->Generate Signed APK
key store path选择jks文件保存位置
Password confirm
Alias 别名
别名密码
Ciountry Code ：ch
```

## 常用JS方法
### 递归拷贝
```javascript
var clone = function(obj) {
  var newObj = obj.constructor === Array ? [] : {};
  for( var key in obj) {
    newObj[key] = typeof obj[key] === 'Object' ? clone(obj[key]) : obj[key];
  }

  return newObj;
}

## vue-简易购物车效果
```
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .fl {
            float: left;
        }

## 杂记(MP3外链)
网易云音乐外链、下载方法
网上搜索了很多方法，有的需要安装软件，都不好用。
今天889网公开一个快捷的方法，并切外链地址长期有效，很简单的方法：
第一步打开网易云音乐，随便找到一首歌，播放，复制网址的ID，
例如：杨钰莹的心雨，网址是：
http://music.163.com/#/song?id=317151
很明显，ID是317151
那么，这首歌的真实地址就是：
http://music.163.com/song/media/outer/url?id=317151.mp3
	### 使用teaset组件NavigationBar
	```javascript
	import React from 'react';
	import { withNavigation } from 'react-navigation';
	import {NavigationBar,Toast} from "teaset"
	import observablemessagetime from '../../Mobx/messageTime'
	import ShopsCartStore from "../../Mobx/ShoppingCartStore"
	import observableOrder from '../../Mobx/ConfirmOrderStore'
	import {inject, observer} from "mobx-react";
	### 适配
	```javascript
	/**
	* Created by vision on 2018/9/12.
	*/

	"use strict"

	import {Dimensions, StatusBar, Platform, PixelRatio} from 'react-native'
	### 找到目录
	```javascript
	node_modules\react-native\local-cli\server\server.js

	const startedCallback = logReporter => {
	logReporter.update({
	type: 'initialize_started',
	port: args.port,
	projectRoots: args.projectRoots,
	});
	### 调用
	```javascript
	import { inject, observer } from 'mobx-react';

	@observer
	export default class ShoppingCart extends Component {
	constructor(props) {
	super(props);
	this.state = {
	all_checked:false,
	### 插件使用
	```javascript
	yarn add react-native-fs
	react-native link react-native-fs
	```
	### 封装保存图片方法
	```javascript
	/**
	* Created by vision on 2018/8/27.
	*/
	### promise实现ajax
	```JavaScript
	var getJSON = function(url) {
	var promise = new Promise(function(resolve, reject){
	var client = new XMLHttpRequest();
	client.open("GET", url);
	client.onreadystatechange = handler;
	client.responseType = "json";
	client.setRequestHeader("Accept", "application/json");
	client.send();
	使用Android studio生成一个key文件

	```html
	build->Generate Signed APK
	key store path选择jks文件保存位置
	Password confirm
	Alias 别名
	别名密码
	Ciountry Code ：ch
	```
	### 递归拷贝
	```javascript
	var clone = function(obj) {
	var newObj = obj.constructor === Array ? [] : {};
	for( var key in obj) {
	newObj[key] = typeof obj[key] === 'Object' ? clone(obj[key]) : obj[key];
	}

	return newObj;
	}
	```
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Title</title>
	<style>
	.fl {
	float: left;
	}
	网易云音乐外链、下载方法
	网上搜索了很多方法，有的需要安装软件，都不好用。
	今天889网公开一个快捷的方法，并切外链地址长期有效，很简单的方法：
	第一步打开网易云音乐，随便找到一首歌，播放，复制网址的ID，
	例如：杨钰莹的心雨，网址是：
	http://music.163.com/#/song?id=317151
	很明显，ID是317151
	那么，这首歌的真实地址就是：
	http://music.163.com/song/media/outer/url?id=317151.mp3