<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[document_ljt的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/document_ljt</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; document_ljt]]></copyright><item><title><![CDATA[面试准备]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/105198839</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/105198839</guid><author>document_ljt</author><pubDate>Mon, 30 Mar 2020 14:30:31 +0800</pubDate><description><![CDATA[es6

import 会进行变量提升

console.log(a)

import a from ‘./test’
]]></description><category></category></item><item><title><![CDATA[第一章 javascript中数据类型]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/103184032</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/103184032</guid><author>document_ljt</author><pubDate>Thu, 21 Nov 2019 15:49:49 +0800</pubDate><description><![CDATA[一：基本数据类型

nullundefinednumberstringBoolean



二：引用数据类型

ObjectArrayFunction



三：...]]></description><category></category></item><item><title><![CDATA[电脑屏幕一般像素]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/99545202</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/99545202</guid><author>document_ljt</author><pubDate>Wed, 14 Aug 2019 10:25:20 +0800</pubDate><description><![CDATA[19的是1440x900

20的是1600x900

21.5的是1920x1080

22的是1680x1050
]]></description><category></category></item><item><title><![CDATA[h5 解码编码]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/90339503</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/90339503</guid><author>document_ljt</author><pubDate>Sun, 19 May 2019 10:02:28 +0800</pubDate><description><![CDATA[&lt;script type="text/javascript"&gt;
     //h5 解码 编码
     const url="http://dhkf%E5%B8%A6%E5%AD%A9%E5%AD%90%E9%82%A3%E4%B8%AA%E5%B1%B1";
     console.log(url);
     //解码
     console.log(decodeURI(u...]]></description><category></category></item><item><title><![CDATA[h5 dom属性的操作]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/90321674</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/90321674</guid><author>document_ljt</author><pubDate>Sat, 18 May 2019 22:41:12 +0800</pubDate><description><![CDATA[&lt;div id="box" data-a="自定义属性" data-a-bcs="自定义属性2"&gt;;
 
   &lt;/div&gt;
  &lt;script type="text/javascript"&gt;
    const box=document.querySelector("#box");
    console.log(box.dataset);
    //控...]]></description><category></category></item><item><title><![CDATA[h5 classList使用]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/90320634</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/90320634</guid><author>document_ljt</author><pubDate>Sat, 18 May 2019 21:20:04 +0800</pubDate><description><![CDATA[&lt;div id="box"&gt;
      &lt;input type="text" value="添加"&gt; 
      &lt;input type="text" value="删除"&gt;
      &lt;input type="text" value="获取"&gt;
      &lt;input type="text" value="切换"&gt;
  ...]]></description><category></category></item><item><title><![CDATA[you must reset your password using alter user statement before executing this statement]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/90298452</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/90298452</guid><author>document_ljt</author><pubDate>Fri, 17 May 2019 18:25:24 +0800</pubDate><description><![CDATA[重置一下你的密码就可以了


alter user user() identified by "123456";

然后cmd命令中就会弹出 Query OK, 0 rows affected &lt;0.03 sec&gt;

之后就可以了


]]></description><category></category></item><item><title><![CDATA[webgl精彩案例]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/89134925</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/89134925</guid><author>document_ljt</author><pubDate>Tue, 09 Apr 2019 09:45:56 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/zhuoganliwanjin/article/details/79423189
]]></description><category></category></item><item><title><![CDATA[前端面试题]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88862219</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88862219</guid><author>document_ljt</author><pubDate>Thu, 28 Mar 2019 09:42:08 +0800</pubDate><description><![CDATA[出处:https://www.cnblogs.com/autismtune/p/5210116.html

1.请你谈谈Cookie的弊端

cookie


1.IE6或更低版本最多20个cookie
2.IE7和之后的版本最后可以有50个cookie。
3.Firefox最多50个cookie
4.chrome和Safari没有做硬性限制


Opera会清理近期最少使用的Firefox会随...]]></description><category></category></item><item><title><![CDATA[eclipse下的tomcat内存设置大小]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88667080</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88667080</guid><author>document_ljt</author><pubDate>Tue, 19 Mar 2019 17:07:33 +0800</pubDate><description><![CDATA[eclipse下的tomcat内存设置大小

在eclipse中设置，居然可以了，

设置步骤如下：

1.点击eclipse上的debug图标旁边的下拉箭头

2.然后选择Run Configurations,

3.系统弹出设置tomcat配置页面，在Argument中末尾添加参数中的VM arguments中追加：

-Xms256M -Xmx512M -XX:PermSize=256m -...]]></description><category></category></item><item><title><![CDATA[node解决Buffer乱码问题]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88643278</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88643278</guid><author>document_ljt</author><pubDate>Mon, 18 Mar 2019 17:09:53 +0800</pubDate><description><![CDATA[const iconv = require('iconv-lite');
    const encoding = 'gbk';
    const binaryEncoding = 'binary';

    tomcatProcess = childProcess.spawn(javaWExe, args, { cwd: getTomcatBase() });
    tomcat...]]></description><category></category></item><item><title><![CDATA[关于JAVA字符编码：Unicode,ISO-8859-1,GBK,UTF-8编码及相互转换]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88642762</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88642762</guid><author>document_ljt</author><pubDate>Mon, 18 Mar 2019 16:53:01 +0800</pubDate><description><![CDATA[出处：https://www.cnblogs.com/haimishasha/p/6117968.html


目录
1.1. ISO-8859-1 通常叫做Latin-11.2. GB2312/GBK1.3 unicode1.4 UTF2.1Unicode与各编码之间的直接转换2.2Unicode与各编码之间的交叉转换2.3编码过程中错误诊断参考3.1 getBytes(char...]]></description><category></category></item><item><title><![CDATA[戒烟]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88423418</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88423418</guid><author>document_ljt</author><pubDate>Tue, 12 Mar 2019 16:32:35 +0800</pubDate><description><![CDATA[记得第一次 吸烟是从高三开始得 那时候总是存在一颗好奇得心,

吸入嘴里在吐出来 到后来得吸入肺中 仅仅花了一周时间 吸烟得第二年不是好奇驱使我吸烟了 而是那可怕得烟瘾 到现在我已经工作了算下来已经有5年得烟龄。

从我第一次想戒烟是在大学时候 由于那时候伙伴比较多 吸烟得也多 戒着戒着又吸起来了/第二次戒烟是在半个月前 到现在已经戒了有10多天了，我得戒烟理由是脏 每次看到遍地得烟灰 我就觉得心...]]></description><category></category></item><item><title><![CDATA[pkg打包]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/88421794</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/88421794</guid><author>document_ljt</author><pubDate>Tue, 12 Mar 2019 15:31:28 +0800</pubDate><description><![CDATA[这个项目很神奇，直接将node.js项目打包成windows可以直接执行的exe文件（也支持FreeBSD、linux、macos、arm系统），甚至不需要安装Node.js，且无须修改你项目中的任何代码！

首先安装pkg


npm install -g pkg

然后在项目目录下执行


pkg entrance.js

即可打包linux,macos,win3个平台的可执行文件。entra...]]></description><category></category></item><item><title><![CDATA[关于JRE和JDK的区别，终于知道他们的区别了]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87882145</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87882145</guid><author>document_ljt</author><pubDate>Fri, 22 Feb 2019 17:08:12 +0800</pubDate><description><![CDATA[java，从大三上学期就开始接触，只是前几堂课翘掉了。
导致，一直弄不明白，JDK和JRE的区别是什么？？
经过几年的“钻研”，“开悟”，我终于明白了。哦哈哈哈
JDK，开发java程序用的开发包，JDK里面有java的运行环境(JRE)，包括client和server端的。需要配置环境变量。。。。
JRE，运行java程序的环境，JVM，JRE里面只有client运行环境，安装过程中，会自动添加...]]></description><category></category></item><item><title><![CDATA[ts里找不到node模块问题]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87865257</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87865257</guid><author>document_ljt</author><pubDate>Thu, 21 Feb 2019 17:33:16 +0800</pubDate><description><![CDATA[npm i @types/node --save-dev


]]></description><category></category></item><item><title><![CDATA[node连接mysql]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87864211</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87864211</guid><author>document_ljt</author><pubDate>Thu, 21 Feb 2019 16:53:47 +0800</pubDate><description><![CDATA[createMySql()



function createMySql() {
    const mysql = require('mysql');
    const connection = mysql.createConnection({
        host: '', //数据库地址
        user: '', //账号
        password: '', //...]]></description><category></category></item><item><title><![CDATA[私钥与公钥区别]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87862234</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87862234</guid><author>document_ljt</author><pubDate>Thu, 21 Feb 2019 15:38:33 +0800</pubDate><description><![CDATA[打个比方：

狄仁杰去 买个了苹果手机 想看看是不是伪造产品 手机上有一串码 用这个码去苹果公司里去查 结果查到了（苹果公司是用私钥和公钥某种方式验证） 狄仁杰这才放心使用手机

这个手机上的码就是 公钥 苹果公司里的那个就私钥 （当然苹果公司只会告诉你真假 因为私钥是私有的不会公开）
...]]></description><category></category></item><item><title><![CDATA[node 给文件签名与验证]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87861623</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87861623</guid><author>document_ljt</author><pubDate>Thu, 21 Feb 2019 15:18:17 +0800</pubDate><description><![CDATA[主要作用：验证文件的正确性

使用环境：我是在服务段给文件签名 客户下载我这个文件 此时可以通过验证签名来确定文件的正确性





const crypto = require(&quot;crypto&quot;);
const fs = require(&quot;fs&quot;);
console.log(fileIsLegitimate())

function fileIsLegitimate() {

    //私钥与...]]></description><category></category></item><item><title><![CDATA[node 读取文件内容]]></title><link>https://blog.youkuaiyun.com/document_ljt/article/details/87798126</link><guid>https://blog.youkuaiyun.com/document_ljt/article/details/87798126</guid><author>document_ljt</author><pubDate>Wed, 20 Feb 2019 15:03:31 +0800</pubDate><description><![CDATA[function createFile(){

const fs=require(&quot;fs&quot;)

const buffer= fs.readFileSync(&quot;C:/working/ROOT.war&quot;)

console.log(String(buffer))

}


]]></description><category></category></item></channel></rss>