# 瀏覽器對象
彈出框
```
<pre class="calibre14">```
<span class="token1">alert</span><span class="token2">(</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>
var ret <span class="token">=</span> <span class="token1">prompt</span><span class="token2">(</span><span class="token4">"請輸入內容!"</span><span class="token2">,</span><span class="token4">""</span><span class="token2">)</span><span class="token2">;</span>
var v <span class="token">=</span> <span class="token1">confirm</span><span class="token2">(</span><span class="token4">'此操作不可恢復,確認嗎?'</span><span class="token2">)</span><span class="token2">;</span> 返回<span class="token3">true</span>可操作
window<span class="token2">.</span><span class="token1">close</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>關閉當前窗口
window<span class="token2">.</span><span class="token1">print</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>打印
```
```
計時器
```
<pre class="calibre14">```
<span class="token5">function</span> <span class="token1">fn</span><span class="token2">(</span><span class="token2">)</span> <span class="token2">{</span>
var d<span class="token">=</span><span class="token5">new</span> <span class="token1">Date</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>
var t<span class="token">=</span>d<span class="token2">.</span><span class="token1">toLocaleTimeString</span><span class="token2">(</span><span class="token2">)</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">"a1"</span><span class="token2">)</span><span class="token2">.</span>innerHTML<span class="token">=</span>t<span class="token2">;</span>
<span class="token2">}</span>
var t <span class="token">=</span> <span class="token1">setTimeout</span><span class="token2">(</span><span class="token4">"fn()"</span><span class="token2">,</span><span class="token3">5000</span><span class="token2">)</span><span class="token2">;</span> 執行一次
<span class="token1">clearTimeout</span><span class="token2">(</span>t<span class="token2">)</span><span class="token2">;</span> 提前結束
var id<span class="token">=</span><span class="token1">setInterval</span><span class="token2">(</span><span class="token4">"fn()"</span><span class="token2">,</span><span class="token3">1000</span><span class="token2">)</span><span class="token2">;</span><span class="token6">//每1秒執行一次</span>
<span class="token1">clearInterval</span><span class="token2">(</span>id<span class="token2">)</span><span class="token2">;</span> 取消定時
```
```
- 讀寫localStorage,長時間存儲 sessionStorage關閉后刪除
```
<pre class="calibre14">```
localStorage<span class="token2">.</span><span class="token1">setItem</span><span class="token2">(</span><span class="token4">"key1"</span><span class="token2">,</span> <span class="token4">"123"</span><span class="token2">)</span><span class="token2">;</span>
localStorage<span class="token2">.</span><span class="token1">removeItem</span><span class="token2">(</span><span class="token4">"bar"</span><span class="token2">)</span><span class="token2">;</span>
var foo <span class="token">=</span> localStorage<span class="token2">.</span><span class="token1">getItem</span><span class="token2">(</span><span class="token4">"bar"</span><span class="token2">)</span><span class="token2">;</span>
```
```
- 選擇器
```
<pre class="calibre14">```
var id<span class="token">=</span>document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">"id"</span><span class="token2">)</span><span class="token2">;</span>
var id <span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">"#k"</span><span class="token2">)</span><span class="token2">;</span>
支持標簽<span class="token2">,</span><span class="token2">.</span>class<span class="token2">,</span>a<span class="token2">[</span>target<span class="token">=</span>_blank<span class="token2">]</span>屬性
var id <span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelectorAll</span><span class="token2">(</span><span class="token4">"li"</span><span class="token2">)</span><span class="token2">;</span>
```
```
- window
```
<pre class="calibre14">```
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"123"</span><span class="token2">)</span> 輸出
console<span class="token2">.</span><span class="token1">log</span><span class="token2">(</span><span class="token4">"控制臺"</span><span class="token2">)</span>
var url <span class="token">=</span> location<span class="token2">.</span>href<span class="token2">;</span>
location<span class="token2">.</span>href<span class="token">=</span><span class="token4">'http://www.baidu.com'</span><span class="token2">;</span>
var domain <span class="token">=</span> document<span class="token2">.</span>domain<span class="token2">;</span><span class="token6">//不含http</span>
var url <span class="token">=</span> <span class="token2">(</span>window<span class="token2">.</span>location<span class="token2">.</span>href<span class="token2">)</span><span class="token2">.</span><span class="token1">substring</span><span class="token2">(</span><span class="token3">0</span><span class="token2">,</span><span class="token2">(</span>window<span class="token2">.</span>location<span class="token2">.</span>href<span class="token2">)</span><span class="token2">.</span><span class="token1">indexOf</span><span class="token2">(</span>document<span class="token2">.</span>location<span class="token2">.</span>pathname<span class="token2">)</span><span class="token2">)</span><span class="token2">;</span><span class="token6">//包含http</span>
var from <span class="token">=</span> document<span class="token2">.</span>referrer<span class="token2">;</span>來源
location<span class="token2">.</span><span class="token1">reload</span><span class="token2">(</span><span class="token3">true</span><span class="token2">)</span><span class="token2">;</span>刷新
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token3">0</span><span class="token2">)</span><span class="token2">;</span>
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>前進
history<span class="token2">.</span><span class="token1">go</span><span class="token2">(</span><span class="token">-</span><span class="token3">1</span><span class="token2">)</span><span class="token2">;</span>后退
document<span class="token2">.</span>title<span class="token2">;</span>
document<span class="token2">.</span>title <span class="token">=</span> <span class="token4">"標題"</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#c'</span><span class="token2">)</span><span class="token2">.</span>dataset<span class="token2">.</span>sex <span class="token">=</span> <span class="token4">"男"</span><span class="token2">;</span>data屬性
document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#c'</span><span class="token2">)</span><span class="token2">.</span>dataset<span class="token2">.</span>sex<span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'demo1'</span><span class="token2">)</span><span class="token2">.</span><span class="token1">setAttribute</span><span class="token2">(</span><span class="token4">'role'</span><span class="token2">,</span> <span class="token4">'button'</span><span class="token2">)</span><span class="token2">;</span> 設置獲取屬性
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'foo'</span><span class="token2">)</span><span class="token2">.</span><span class="token1">removeAttribute</span><span class="token2">(</span><span class="token4">'role'</span><span class="token2">)</span><span class="token2">;</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'foo'</span><span class="token2">)</span><span class="token2">.</span>innerHTML <span class="token">=</span> <span class="token4">'Goodbye!'</span><span class="token2">;</span>設置值
```
```
- 邏輯
```
<pre class="calibre14">```
<span class="token5">if</span> <span class="token2">(</span>time<span class="token"><</span><span class="token3">10</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>早上好</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">else</span> <span class="token5">if</span> <span class="token2">(</span>time<span class="token">>=</span><span class="token3">10</span> <span class="token">&&</span> time<span class="token"><</span><span class="token3">16</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>今天好</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">else</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span><span class="token4">"<b>晚上好!</b>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token1">switch</span><span class="token2">(</span>n<span class="token2">)</span>
<span class="token2">{</span>
case <span class="token3">1</span><span class="token2">:</span>
執行代碼塊 <span class="token3">1</span>
<span class="token5">break</span><span class="token2">;</span>
case <span class="token3">2</span><span class="token2">:</span>
執行代碼塊 <span class="token3">2</span>
<span class="token5">break</span><span class="token2">;</span>
default<span class="token2">:</span>
與 case <span class="token3">1</span> 和 case <span class="token3">2</span> 不同時執行的代碼
<span class="token2">}</span>
<span class="token5">for</span> <span class="token2">(</span>var i<span class="token">=</span><span class="token3">0</span><span class="token2">;</span>i<span class="token"><</span>cars<span class="token2">.</span>length<span class="token2">;</span>i<span class="token">++</span><span class="token2">)</span>
<span class="token2">{</span>
document<span class="token2">.</span><span class="token1">write</span><span class="token2">(</span>cars<span class="token2">[</span>i<span class="token2">]</span> <span class="token">+</span> <span class="token4">"<br>"</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span>
<span class="token5">while</span> <span class="token2">(</span>條件<span class="token2">)</span>
<span class="token2">{</span>
需要執行的代碼
<span class="token2">}</span>
```
```
監聽事件
```
<pre class="calibre16">```
var el<span class="token">=</span> document<span class="token2">.</span><span class="token1">querySelector</span><span class="token2">(</span><span class="token4">'#btn'</span><span class="token2">)</span><span class="token2">;</span>
el<span class="token2">.</span><span class="token1">addEventListener</span><span class="token2">(</span><span class="token4">'click'</span><span class="token2">,</span><span class="token5">function</span><span class="token2">(</span><span class="token2">)</span><span class="token2">{</span>
document<span class="token2">.</span><span class="token1">getElementById</span><span class="token2">(</span><span class="token4">'loading1'</span><span class="token2">)</span><span class="token2">.</span>classList<span class="token2">.</span><span class="token1">add</span><span class="token2">(</span><span class="token4">'loading1'</span><span class="token2">)</span><span class="token2">;</span>
<span class="token2">}</span><span class="token2">)</span>
```
```
- 簡介
- 第一章 數據庫
- Mysql/mariadb
- 函數
- 基礎
- 增刪改索引
- 標準查詢
- 高級查詢
- TIDB集群mysql解決方案
- Redis
- 語言基礎
- 5種數據類型
- 其他類型
- Sqlite
- 語言基礎
- 常用查詢
- 第二章 PHP
- 語言基礎
- 第一課 流程控制和運算
- 第二課 數組
- 第三課 日期時間
- 第四課 常用函數
- 第五課 字符串
- 第六課 文件操作
- 第七課 面向對象
- 第八課 正則表達式
- 第九課 圖片處理生成
- 第十課 curl/memche
- 第十一課 mysql和pdo
- 第十三課 cookie和session
- 第十四課 xml操作
- 第十五課 php5.3+新特性
- 第十六課 php7+
- 第十七課 密碼安全
- 廢棄函數
- php命令行
- redis應用
- 算法
- 排序算法
- 基礎算法
- 無限級分類
- 自定義函數Fn
- 查找算法
- 自定義函數數據函數fn
- laravel
- 路由
- 常用語句
- 數據庫
- dingo/api
- Yii2
- 控制器
- 常用類
- 數據庫
- redis
- thinkphp6
- TP6文檔
- TP6插件
- dedecms
- 織夢標簽大全
- 數據庫操作
- 內置函數和定義函數
- 織夢核心改動
- 織夢插件/底層標簽開發
- PHP相關工具
- composer
- php開發環境phpenv
- Phpstorm使用
- windows編譯php擴展
- PHP開源庫
- 開源項目管理禪道
- sns_auth
- php-casbin權限控制
- php-jwt
- 微信SDKeasywechat
- querylist采集庫
- workerman
- Box/Spout處理excel和csv
- dll擴展
- redis/memche/xdebug
- redis
- Lua
- php_xlswriter
- event
- swoole
- 常用代碼庫
- 微擎框架
- 第一課全局變量
- 第二課常用函數
- 第三課自定義微擎獨有函數
- 第四課數據庫操作
- 第五課微信端回復
- 第六課微擎高級操作
- 第八課global函數列表
- mainfest.xml詳解
- js方法
- 人人商城
- 第一課model解讀
- 第二課常用語句解讀
- 第三課常用js解讀
- 第四課附錄常見問題
- 第五課附錄處理報表|支付
- 常用JSON狀態碼
- 第三章 JavaScript
- js基礎
- 瀏覽器對象
- 語言基礎
- html5接口
- ES6新語法
- vue
- 基礎語法
- 京東vueUI組件
- uniapp
- 組件開發規范
- nodejs
- 基礎知識
- 安裝node
- nvm不同版本node切換
- js常用標準庫
- zepto/jquery
- weui
- js圖標庫
- elementUI
- validator表單驗證
- layer彈出層
- requirejs
- wow動畫
- 動畫animate
- swiper4
- 百度編輯器
- flyio/axios/qs
- jquery.form
- bootstrap3
- clipboard復制
- slideout側滑
- imagehover.css圖片懸停動畫
- webpack打包
- Bulma UI框架
- store 客戶端存儲
- lottie動畫創建庫
- sweetalert
- js自定義函數
- 常見JSSDK
- 微信公眾號JSSDK
- 騰訊地圖jssdk
- 微信小程序
- 第四章 編程語言
- markdown語言
- Dart語言
- Dart語言基礎
- Flutter框架
- Lua語言
- 字符串,數組,表
- 自定義方法
- go語言
- 第1.1語言基本語法
- 第1.2流程控制
- 第1.3函數
- 第1.4結構體
- 第1.5接口
- 第1.6包
- go語言框架Gin
- CSS3語言
- CSS與CSS3
- 選擇符
- 屬性
- css3
- loading動畫
- HTML5語言
- less
- sass
- C#
- 基礎知識
- 函數
- 第五章 開發工具
- git
- nginx/apache服務器
- Linux常用操作
- crontab定時任務
- 注冊表與cmd
- 阿里云ECS
- frp穿透和ssl續期
- 寶塔安裝
- 樹莓派
- 瀏覽器模擬
- 火狐/chrome常用插件
- WSL安裝使用
- mac brew和終端命令
- win10相關