Chris' Blog

function A() {
    function B() {
        console.log('Hi Chris ~');
    }

    return B
}

let C = A();        // 保存A方法执行的结果,也就是B函数体
C();                // 这里可以看做是B该函数体执行

function A() {
    let count = 10;
    function B() {
        count ++;
        console.log(count);
    }
    
    return B
}

let C = A();        // 保存A方法执行的结果,也就是B函数体
C();                // 11		
C();                // 12
C();                // 13		A没有被释放，一直保存着 count 每次运算后的结果

(function (document) {
    let viewport;
    let obj = {
        init: function (id) {
            viewport = document.querySelector('#' + id);
        },
        addChild: function (child) {
            viewport.appendChild(child);
        },
        removeChild: function (child) {
            viewport.removeChild(child);
        }
    }
    window.jView = obj;
})(document);

let f = function (document) {
    let viewport;
    let obj = {
        init: function (id) {
            viewport = document.querySelector('#' + id);
        },
        addChild: function (child) {
            viewport.appendChild(child);
        },
        removeChild: function (child) {
            viewport.removeChild(child);
        }
    }
    window.jView = obj;
};
f(document);

/**
 * 防抖函数
 * @param method 事件触发的操作
 * @param delay 多少毫秒内连续触发事件，不会执行
 * @returns {Function}
 */
export const debounce = (method, delay) => {
  let timer = null;
  return function () {
    let self = this,
        args = arguments;
    timer && clearTimeout(timer);
    timer = setTimeout(function () {
      method.apply(self, args);
    }, delay);
  }
}


/**
 * 节流函数
 * @param method 事件触发的操作
 * @param mustRunDelay 间隔多少毫秒需要触发一次事件
 */
export const throttle = (method, mustRunDelay) => {
  let timer,
      args = arguments,
      start;
  return function loop() {
    let self = this;
    let now = Date.now();
    if (!start) {
      start = now;
    }
    if (timer) {
      clearTimeout(timer);
    }
    if (now - start >= mustRunDelay) {
      method.apply(self, args);
      start = now;
    } else {
      timer = setTimeout(function () {
        loop.apply(self, args);
      }, 100);
    }
  }
}

data: {
    isChecked: [true, true, true, true, true, true, true, true, true, true]
}

click : function (e) {
    let index = e.target.index;	//根据点击不同的view获取对应的id值
    let str = `isChecked[${index}]`;	//重点在这里，组合出一个字符串
    this.setData({
      [str]: false				//用中括号把str括起来即可
    })
}

onUnload() {
    let pages = getCurrentPages();  // 当前页面栈
    let prevPage = pages[pages.length - 2];  // 上个页面栈
    console.log(prevPage);
    // 把数据直接设置到上个页面的data里面，返回后，在onShow里面可以直接通过this.data 获取到
    prevPage.setData({
        book_id: this.data.book_id 
    });
    // wx.navigateBack({});
}

let paramsObj = new URLSearchParams();
paramsObj.append('openid', 'oSrdV47XurWKLdhjheQ_9U1UKrWQ');   // key,value
axios({
    method: 'post',
    url: '/api_prod/booklist/get_topic_list',
    data: paramsObj
}).then(res => {
    // Coding
})

import axios from 'axios'
import qs from 'qs'

created() {
    axios({
        method: 'post',
        url: '/api_prod/booklist/get_topic_list',
        data: qs.stringify({
        	key: 'value'
        }),
    }).then(res => {
        // Coding
    })
}

touch vue.config.js

module.exports = {
    devServer: {
        proxy: {
            '/api': {
                target: 'https://www.boomore.cn',
                changeOrigin: true,         // 是否开启跨域
                pathRewiter: {
                    '^/api_prod': ''
                }
            }
        }
    }
};

axios({
    method: 'post',
    url: '/api_prod/booklist/get_topic_list',
    data: qs.stringify({
        key: value,
   }),
}).then(res => {
    // Coding
})

const NodeMailer = require('nodemailer');     //@modules  npm install nodemailer

// 开启一个 SMTP 连接池
let transporter = NodeMailer.createTransport({
	service: 'qq',
	post: 465,          			// SMTP 端口
	secureConnection: true,         // SSL
	auth: {
		user: '[email protected]',
		pass: 'xxxxxxxxxxxxx',  	// SMTP 授权码, 需要在邮箱设置中开启SMTP服务
	}
});

// 设置邮件内容
let mailOptions = {
	from: '[email protected]',               // 发件地址
	to: '[email protected]',           // 收件地址
	subject: 'Title',             			// 标题
	text: 'Hello ChrisChen',            	// text | html 只能选择一种作为内容
	// html: '<h1>Hello ChrisChen</h1>'
};

// 发送邮件
transporter.sendMail(mailOptions, function (err, info) {
	if (err) throw err;
	console.log(info);
	transporter.close();            // 关闭连接池
});