<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[TionSu的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/TionSu</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; TionSu]]></copyright><item><title><![CDATA[webpack4下的ES6转ES5和兼容IE的配置]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/106303297</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/106303297</guid><author>TionSu</author><pubDate>Sat, 23 May 2020 17:36:58 +0800</pubDate><description><![CDATA[1、如下图，如果我们用了es6的语法，会在IE9、IE10下报错



2、配置

执行命令：npminstall@babel/core@babel/preset-env babel-loader -D
@babel/core提供了es6转es5的功能
@babel/preset-env提供了解析js语法的配置

3、修改配置



4、结果



注意：如果按照上述步骤还是不成功，建议删除【node_module】目录再试一次
...]]></description><category></category></item><item><title><![CDATA[JavaScript：for in 和 for of的区别详解]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/102392733</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/102392733</guid><author>TionSu</author><pubDate>Tue, 08 Oct 2019 16:13:56 +0800</pubDate><description><![CDATA[例1


    const obj = {
        a: 1,
        b: 2,
        c: 3
    }
    for (let i in obj) {
        console.log(i)
        // a
        // b
        // c
    }
    for (let i of obj) {
        cons...]]></description><category></category></item><item><title><![CDATA[vue-cli3.0 + axios 进行跨域]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/100546784</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/100546784</guid><author>TionSu</author><pubDate>Wed, 04 Sep 2019 20:42:19 +0800</pubDate><description><![CDATA[1、设置axios的默认请求url：axios.defaults.baseURL = '/weather';





2、在与package.json的统计目录中新建vue.config.js文件



3、在vue.config.js中新增如下代码


module.exports = {
    devServer: {
        proxy: {
            '/wea...]]></description><category></category></item><item><title><![CDATA[vue使用refs获取dom时的注意点]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/100055243</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/100055243</guid><author>TionSu</author><pubDate>Sat, 24 Aug 2019 17:35:24 +0800</pubDate><description><![CDATA[vue中使用refs定位dom出现undefined？

　　之前在公司做项目，一直感觉用ref来定位dom节点挺方便的。但是期间遇到了一个问题，就是在mounted(){}钩子里面使用this.$refs.xxx，打印出来的却是undefined？

　　于是我就对比了一下之前使用ref定位的.vue文件，发现了他们之间的区别。

　　我们要想知道为什么会定位不到某个DOM节点，我们首先要理解m...]]></description><category></category></item><item><title><![CDATA[解决打开git bash一闪而过问题]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/99629507</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/99629507</guid><author>TionSu</author><pubDate>Thu, 15 Aug 2019 12:37:42 +0800</pubDate><description><![CDATA[原文链接：https://blog.youkuaiyun.com/weixin_36732046/article/details/82426036


问题描述：

今天安装git之后发现Git Bash工具闪退。

于是试了各种办法之后，最后终于解决。

背景描述：

git 下载安装成功之后，发现Git Bash闪退。打不开。



cmd中输入：sc query null回车

再输入sc sta...]]></description><category></category></item><item><title><![CDATA[python 中cv2.VideoWriter_fourcc 输出视频的格式要求（待补充）]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/81356006</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/81356006</guid><author>TionSu</author><pubDate>Thu, 15 Aug 2019 12:32:00 +0800</pubDate><description><![CDATA[cv2.VideoWriter_fourcc('P','I','M','1') = MPEG-1 codec  
cv2.VideoWriter_fourcc('M','J','P','G') = motion-jpeg codec   --&gt; mp4v
cv2.VideoWriter_fourcc('M', 'P', '4', '2') = MPEG-4.2 codec
cv2.Vide...]]></description><category></category></item><item><title><![CDATA[django出现 Model class xx doesn't declare and isn't in an application in INSTALLED_APPS]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/90417076</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/90417076</guid><author>TionSu</author><pubDate>Tue, 21 May 2019 22:40:32 +0800</pubDate><description><![CDATA[1、出现问题如下



2、解决（在INSTALLED_APPS中填写models.py的父目录名称）


]]></description><category></category></item><item><title><![CDATA[关于python3  MD5加密时出现 {TypeError}Unicode-objects must be encoded before hashing]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87903070</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87903070</guid><author>TionSu</author><pubDate>Sun, 24 Feb 2019 14:38:14 +0800</pubDate><description><![CDATA[如下图：



 

解决办法：



需指定加密数据的编码方式]]></description><category></category></item><item><title><![CDATA[vue-cli 3.0  出现内存溢出: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87902685</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87902685</guid><author>TionSu</author><pubDate>Sun, 24 Feb 2019 14:04:21 +0800</pubDate><description><![CDATA[问题如下图：



 

解决办法：



1.  输入：npm install increase-memory-limit ，回车，等待安装完成

2.  步骤1完成后，接着输入 increase-memory-limit ，回车， 基本问题就解决了...]]></description><category></category></item><item><title><![CDATA[element-ui 滚动条组件 el-scrollbar 的使用]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87719479</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87719479</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 17:11:00 +0800</pubDate><description><![CDATA[1、代码



 

2、样式



el-scrollbar使用时，会出现横向（x）和纵向（y）的滚动条，

上面样式中，我们这里隐藏了横向（x）的滚动条

 

3、效果



这个滚动条主流的浏览器都兼容！！！！！！！！！...]]></description><category></category></item><item><title><![CDATA[vue-cli 3.0 eslint规则的操控]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87718043</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87718043</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 16:50:11 +0800</pubDate><description><![CDATA[位置 package.json （在vue-cli 3.0下测试并且成功过）



至于如何修改规则，请查看：https://blog.youkuaiyun.com/TionSu/article/details/78275277

记得修改好后，重新: npm run serve...]]></description><category></category></item><item><title><![CDATA[vue-cli 3.0 添加文件引用的别名]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87716841</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87716841</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 16:43:24 +0800</pubDate><description><![CDATA[1、新建vue.config.js   2、复制如下格式的代码



代码：


module.exports = {
  configureWebpack: {
    resolve: {
      alias: {
        'api': '@/api',
        'assets': '@/assets',
        'components': '@/component...]]></description><category></category></item><item><title><![CDATA[echarts报表背景的x、y轴分割线样式操控]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87716291</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87716291</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 16:26:34 +0800</pubDate><description><![CDATA[1、代码：



2、效果：



注意： y轴同样也适用splitLine属性]]></description><category></category></item><item><title><![CDATA[excharts报表默认显示列、块数据的tip部分]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87714181</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87714181</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 15:56:10 +0800</pubDate><description><![CDATA[1、效果：



 

2、代码：myChart.dispatchAction({type: 'showTip', seriesIndex: 0, dataIndex: 0});

]]></description><category></category></item><item><title><![CDATA[Ubuntu下的mysql安装与数据库的远程访问]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87711593</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87711593</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 15:38:17 +0800</pubDate><description><![CDATA[ubuntu上安装mysql需要的环境包。

1. sudo apt-get install mysql-server

2. sudo apt-get isntall mysql-client

3.  sudo apt-get install libmysqlclient-dev

 

登陆mysql数据库：

mysql -u root -p 

-u 表示选择登陆的用户名， -p 表示登...]]></description><category></category></item><item><title><![CDATA[Python  Django ORM的F、Q、extra操作]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87711114</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87711114</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 15:17:19 +0800</pubDate><description><![CDATA[文章转载于：http://blog.51cto.com/sgk2011/2069011

 

F的功能

假设数据库有一个员工表，表中的年龄都自加“1”，这里就需要到orm的F功能，如下面的代码：


    #首先要导入这个F模块
    from django.db.models import F

    #这里的F功能后面的age，它就会让数据表表中的age这列+1
    models...]]></description><category></category></item><item><title><![CDATA[python django的查询语句]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/87710114</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/87710114</guid><author>TionSu</author><pubDate>Tue, 19 Feb 2019 15:06:09 +0800</pubDate><description><![CDATA[原文地址：https://www.cnblogs.com/rinka/p/django_make_queries_anout_built-in_lookups.html

 

django-查询语句

1.model

假设我们的model如下：

某个JobType下有很多Job。


class JobType(models.Model):
    name = models.CharFie...]]></description><category></category></item><item><title><![CDATA[Python中的strftime()]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/79971677</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/79971677</guid><author>TionSu</author><pubDate>Tue, 17 Apr 2018 10:56:34 +0800</pubDate><description><![CDATA[&amp;gt;&amp;gt;&amp;gt; import time&amp;gt;&amp;gt;&amp;gt; time.strftime(&quot;%y-%m-%d&quot;)'15-06-18'&amp;gt;&amp;gt;&amp;gt; time.strftime(&quot;%c&quot;)'06/18/15 09:27:38'格式含义取值范围（格式）%y去掉世纪的年份00-99，如&quot;15&quot;%Y完整的年份如&quot;2015&quot;%j指定日期是一年中的]]></description><category></category></item><item><title><![CDATA[JS中的call()方法和apply()]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/79910460</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/79910460</guid><author>TionSu</author><pubDate>Thu, 12 Apr 2018 10:57:01 +0800</pubDate><description><![CDATA[转载于：https://blog.youkuaiyun.com/ganyingxie123456/article/details/70855586最近又遇到了JacvaScript中的call()方法和apply()方法，而在某些时候这两个方法还确实是十分重要的，那么就让我总结这两个方法的使用和区别吧。1. 每个函数都包含两个非继承而来的方法：call()方法和apply()方法。2. 相同点：这两个方法的作...]]></description><category></category></item><item><title><![CDATA[element ui 表单验证（小结2）]]></title><link>https://blog.youkuaiyun.com/TionSu/article/details/79818117</link><guid>https://blog.youkuaiyun.com/TionSu/article/details/79818117</guid><author>TionSu</author><pubDate>Wed, 04 Apr 2018 15:39:00 +0800</pubDate><description><![CDATA[element官方提供的表单验证不起效或者不符合我们的需求，以下是在element ui表单里面添加我们自己的表单验证1、data()函数里面定义一个判断是否是数字或者小数的验证，然后调用2.效果（而且还保留官方的小红星*）如果设置不起效，请前往查看https://blog.youkuaiyun.com/tionsu/article/details/78909956...]]></description><category></category></item></channel></rss>