zhchl567的博客

手动btsoft_ubuntu

zhchl567 — Sat, 27 Aug 2022 17:28:33 +0800

手动btsoft_ubuntu

java 99乘法表

zhchl567 — Wed, 14 Apr 2021 02:03:17 +0800

public class Main { public static void main(String[] args) { t99(" "); } public static void t99(String t) { String t1 = ""; String t2 = ""; for (int i = 1; i <= 99; i++) { for (int j = 1; j <=

java 修饰符

zhchl567 — Fri, 26 Mar 2021 11:17:57 +0800

public all default 包内 protected 包内 -> 本类 + 子类 private 包内 -> 本类

git 基本操作

zhchl567 — Mon, 15 Feb 2021 00:11:17 +0800

名词本地库：repository / HEAD / history / 版本库 / 库暂存区：stage / index / 缓存区工作区：working Dir 远程库：remote 操作文件操作生成git仓库 git init git clone https://github.com/xxx/xxx.git 工作区 →\rightarrow→ 暂存区 git add . git add filename.txt 暂存区 →\rightarrow→ 库 git commi

java 数据类型，转换

zhchl567 — Sun, 07 Feb 2021 06:29:24 +0800

class first{ public static void main(String[] args){ byte Integer1 = 127; // 2^7 - 1 System.out.println(Integer1); short Integer2 = 32767; // 2^15 - 1 System.out.println(Integer2); int Integer3 = 2147483647; // 2^31 - 1 System.out.println

CentOS 设置静态ip

zhchl567 — Tue, 12 Jan 2021 21:54:07 +0800

ifconfig vim /etc/sysconfig/network-scripts/ifcfg-ens33 vim /etc/sysconfig/network-scripts/ifcfg-enp0s3 TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" BOOTPROTO="dhcp" // static DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF=.

php 面向对象_练习

zhchl567 — Wed, 16 Dec 2020 06:09:54 +0800

插入usb行为 interface usb{ function cha(); function check(); } class port{ protected $state = 0; protected $thing = ""; public function __construct($thing) { $this->thing = $thing; } public function cha() { $this->state = 1; } public functio

php namespace

zhchl567 — Mon, 14 Dec 2020 20:12:22 +0800

PHP 命名空间(namespace) php官方文档：使用命名空间：基础 // \f.fun // \names\f.fun // \names\n1\f.fun // \names\n2\f.fun // \names\n3\f.fun namespace { function f() { echo "g"; } f(); // 1.非限定名称 names\f(); // 2.限定名称 names\n1\f(); \names\n2\f(); // 3.完全限定名称 names\

js es5严格模式_练习

zhchl567 — Mon, 02 Nov 2020 23:06:27 +0800

在逻辑的顶端声明"use strict"，启动es5.0模式 arguments.callee无法在es5.0模式下使用。 // "use strict"; // 执行a函数时直接报错。 function a() { console.log(arguments.callee); } function b() { "use strict"; a(); // 3.0正常 console.log(arguments.callee); // 5.0报错 } function c() { c

apicloud + appstore 证书制作过程

zhchl567 — Tue, 14 Jul 2020 15:15:06 +0800

iOS证书 Apicloud 文档： https://doc.apicloud.com/Dev-Guide/iOS-License-Application-Guidance 证书： https://www.apicloud.com/certificate apple 生成证书： https://developer.apple.com/account/resources/certificates/list 提交审核： https://appstoreconnect.apple.com/apps 制作App

js 工具函数集

zhchl567 — Tue, 14 Jul 2020 11:45:13 +0800

// 深度克隆对象 function deepClone(o, t) { t = t || {}; for (var k in o) { if (o.hasOwnProperty(k)) { // 排除原型链的非自定义属性 if (o[k] !== null && typeof(o[k]) == 'object') { // if (Object.prototype.toString.call(o[k]) == '[object Array]') { // t[k

js 数组_练习

zhchl567 — Fri, 10 Jul 2020 18:01:48 +0800

var a = []; var b = new Array(); var a1 = [1,2,3]; // [1,2,3] var a2 = [1,2,,3]; // [1,2,undefined,3] var a3 = [,]; // [undefined] var a4 = [3,]; // [3] var a5 = [,3]; // [undefined,3] var b1 = new Array(1,2,3); // [1,2,3] var b2 = new Array(3);

js 深度克隆_练习

zhchl567 — Fri, 10 Jul 2020 12:43:01 +0800

// 浅度克隆 function clone(o, t) { t = t || {}; for (var k in o) { t[k] = o[k]; } return t; } // 深度克隆 function deepClone(o, t) { t = t || {}; for (var k in o) { if (o.hasOwnProperty(k)) { // 排除原型链的非自定义属性 if (typeof(o[k]) == 'object') { if (Obj

js caller_练习

zhchl567 — Fri, 10 Jul 2020 01:38:01 +0800

function a() { if (b.caller == b) { return 'fun is b'; } else { return 'other fun'; } } function b() { a(); // return 'fun is b' } function c() { a(); // return 'other fun' } b(); c();

js this_练习

zhchl567 — Thu, 09 Jul 2020 23:46:27 +0800

js 区分array和object

zhchl567 — Wed, 08 Jul 2020 18:47:38 +0800

var arr = []; var obj = {}; // type1 arr.constructor == Object // "false" obj.constructor == Object // "true" // type2 arr instanceof Array // "true" obj instanceof Array // "false" // type3 Object.prototype.toString.call(arr); // "[object Array]" Objec

js this指向_练习

zhchl567 — Wed, 08 Jul 2020 18:09:38 +0800

var a = { b : function () {}, // return undefined c : function () {return this}, // return a。（指向a） d : this // 指向 window }

js 命名空间_练习

zhchl567 — Wed, 08 Jul 2020 17:16:44 +0800

// var org = { // dep1 : { // zh : { // div : '

', // changeP : function () {} // }, // lianh : { // div : '

', // changeP : function () {} // } // }, // dep2 : { // li : { // div : '&

js 集成模式_圣杯

zhchl567 — Wed, 08 Jul 2020 15:36:47 +0800

Origin.prototype.oriProto = 'oriP'; function Origin() { this.oriData = 'oriD'; } var origin = new Origin(); console.log(origin); function inherit(Ori, Tar) { F.prototype = Ori.prototype; function F() {} Tar.prototype = new F(); // 只继承Ori.prototype，不执行

js call_apply_练习

zhchl567 — Wed, 08 Jul 2020 14:20:05 +0800

bierende.prototype.earn = function () { this.money ++; }; bierende.prototype.color = 'yellow'; function bierende(last) { this.last = last; this.money = 20000; } // wode.prototype = bierende.prototype; for (let k in bierende.prototype) { wode.p