Web APIs (第七天——正则表达式)

一、正则表达式

1.1什么是正则表达式

 

1.2正则表达式——语法

 

1.3元字符 

1.3.1边界符

1.3.2量词

 

 1.3.3字符类

 

 

 

 

1.4修饰符

 

 1.5input和change事件

 二、正则案例

1.小兔仙新用户注册案例

遇到的问题:

1.立即执行函数 (function(){}());   

2. [name=username]  css 属性选择器

3.contains判断有没有这个类名

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>131111</title>
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="renderer" content="webkit">
  <link rel="shortcut icon" href="./favicon.ico">
  <link rel="stylesheet" href="./css/common.css">
  <link rel="stylesheet" href="./css/register.css">
  <link rel="stylesheet" href="https://at.alicdn.com/t/font_2143783_iq6z4ey5vu.css">
</head>

<body>
  <!-- 项部导航 -->
  <div class="xtx_topnav">
    <div class="wrapper">
      <!-- 顶部导航 -->
      <ul class="xtx_navs">
        <li>
          <a href="./login.html">请先登录</a>
        </li>
        <li>
          <a href="./register.html">免费注册</a>
        </li>
        <li>
          <a href="./center-order.html">我的订单</a>
        </li>
        <li>
          <a href="./center.html">会员中心</a>
        </li>
        <li>
          <a href="javascript:;">帮助中心</a>
        </li>
        <li>
          <a href="javascript:;">在线客服</a>
        </li>
        <li>
          <a href="javascript:;">
            <i class="mobile sprites"></i>
            手机版
          </a>
        </li>
      </ul>
    </div>
  </div>
  <!-- 头部 -->
  <div class="xtx_header">
    <div class="wrapper">
      <!-- 网站Logo -->
      <h1 class="xtx_logo"><a href="/">小兔鲜儿</a></h1>
      <!-- 主导航 -->
      <div class="xtx_navs">
        <ul class="clearfix">
          <li>
            <a href="./index.html">首页</a>
          </li>
          <li>
            <a href="./category01.html">生鲜</a>
          </li>
          <li>
            <a href="./category01.html">美食</a>
          </li>
          <li>
            <a href="./category01.html">餐厨</a>
          </li>
          <li>
            <a href="./category01.html">电器</a>
          </li>
          <li>
            <a href="./category01.html">居家</a>
          </li>
          <li>
            <a href="./category01.html">洗护</a>
          </li>
          <li>
            <a href="./category01.html">孕婴</a>
          </li>
          <li>
            <a href="./category01.html">服装</a>
          </li>
        </ul>
      </div>
      <!-- 站内搜索 -->
      <div class="xtx_search clearfix">
        <!-- 购物车 -->
        <a href="./cart-none.html" class="xtx_search_cart sprites">
          <i>2</i>
        </a>
        <!-- 搜索框 -->
        <div class="xtx_search_wrapper">
          <input type="text" placeholder="搜一搜" onclick="location.href='./search.html'">
        </div>
      </div>
    </div>
  </div>
  <div class="xtx-wrapper">
    <div class="container">
      <!-- 卡片 -->
      <div class="xtx-card">
        <h3>新用户注册</h3>
        <form class="xtx-form">
          <div data-prop="username" class="xtx-form-item">
            <span class="iconfont icon-zhanghao"></span>
            <input name="username" type="text" placeholder="设置用户名称">
            <span class="msg"></span>
          </div>
          <div data-prop="phone" class="xtx-form-item">
            <span class="iconfont icon-shouji"></span>
            <input name="phone" type="text" placeholder="输入手机号码  ">
            <span class="msg"></span>
          </div>
          <div data-prop="code" class="xtx-form-item">
            <span class="iconfont icon-zhibiaozhushibiaozhu"></span>
            <input name="code" type="text" placeholder="短信验证码">
            <span class="msg"></span>
            <a class="code" href="javascript:;">发送验证码</a>
          </div>
          <div data-prop="password" class="xtx-form-item">
            <span class="iconfont icon-suo"></span>
            <input name="password" type="password" placeholder="设置6至20位字母、数字和符号组合">
            <span class="msg"></span>
          </div>
          <div data-prop="confirm" class="xtx-form-item">
            <span class="iconfont icon-suo"></span>
            <input name="confirm" type="password" placeholder="请再次输入上面密码">
            <span class="msg"></span>
          </div>
          <div class="xtx-form-item pl50">
            <i class="iconfont icon-queren"></i>
            已阅读并同意<i>《用户服务协议》</i>
          </div>
          <div class="xtx-form-item">
            <button class="submit">下一步</button>
            <!-- <a class="submit" href="javascript:;">下一步</a> -->
          </div>
        </form>
      </div>
    </div>
  </div>
  <!-- 公共底部 -->
  <div class="xtx_footer clearfix">
    <div class="wrapper">
      <!-- 联系我们 -->
      <div class="contact clearfix">
        <dl>
          <dt>客户服务</dt>
          <dd class="chat">在线客服</dd>
          <dd class="feedback">问题反馈</dd>
        </dl>
        <dl>
          <dt>关注我们</dt>
          <dd class="weixin">公众号</dd>
          <dd class="weibo">微博</dd>
        </dl>
        <dl>
          <dt>下载APP</dt>
          <dd class="qrcode">
            <img src="./uploads/qrcode.jpg">
          </dd>
          <dd class="download">
            <span>扫描二维码</span>
            <span>立马下载APP</span>
            <a href="javascript:;">下载页面</a>
          </dd>
        </dl>
        <dl>
          <dt>服务热线</dt>
          <dd class="hotline">
            400-0000-000
            <small>周一至周日 8:00-18:00</small>
          </dd>
        </dl>
      </div>
    </div>
    <!-- 其它 -->
    <div class="extra">
      <div class="wrapper">
        <!-- 口号 -->
        <div class="slogan">
          <a href="javascript:;" class="price">价格亲民</a>
          <a href="javascript:;" class="express">物流快捷</a>
          <a href="javascript:;" class="quality">品质新鲜</a>
        </div>
        <!-- 版权信息 -->
        <div class="copyright">
          <p>
            <a href="javascript:;">关于我们</a>
            <a href="javascript:;">帮助中心</a>
            <a href="javascript:;">售后服务</a>
            <a href="javascript:;">配送与验收</a>
            <a href="javascript:;">商务合作</a>
            <a href="javascript:;">搜索推荐</a>
            <a href="javascript:;">友情链接</a>
          </p>
          <p>CopyRight &copy; 小兔鲜儿</p>
        </div>
      </div>
    </div>
  </div>
  <script>
    //立即执行函数 (function(){}());    
    (function(){
      //1.手机验证码
      let codeInput=document.querySelector('.code')
      codeInput.addEventListener('click',function(){
        codeInput.innerHTML='05秒后重新获取'
        let num=5
        let timer=setInterval(function(){
          num--
          codeInput.innerHTML=`0${num}秒后重新获取`
          if(num===0){
            codeInput.innerHTML='重新获取'
            clearInterval(timer)
          }
        },1000)
      })
      //2.用户名验证
      let username=document.querySelector('[name=username]')      
      username.addEventListener('change',verifyUsername)
      function verifyUsername(){
        let span=username.nextElementSibling
        let reg=/^[a-zA-Z0-9-_]{6,10}$/
        if(!reg.test(username.value)){
          span.innerHTML='昵称长度为6-10个字符'
          return false
        }
        span.innerHTML=''
        return true
      }
      //3.手机号验证
      let phone=document.querySelector('[name=phone]')      
      phone.addEventListener('change',verifyphone)
      function verifyphone(){
        let span=phone.nextElementSibling
        let reg=/^1(3\d|4[5-9]|5[0-35-9]|6[567]|7[0-8]|8\d|9[0-35-9])\d{8}$/
        if(!reg.test(phone.value)){
          span.innerHTML='请输入正确的手机号'
          return false
        }
        span.innerHTML=''
        return true
      }
      //4.验证码验证
      let code=document.querySelector('[name=code]')      
      code.addEventListener('change',verifycode)
      function verifycode(){
        let span=code.nextElementSibling
        let reg=/^\d{6}$/
        if(!reg.test(code.value)){
          span.innerHTML='请输入正确的验证码'
          return false
        }
        span.innerHTML=''
        return true
      }
      //5.密码验证
      let password=document.querySelector('[name=password]')      
      password.addEventListener('change',verifypassword)
      function verifypassword(){
        let span=password.nextElementSibling
        let reg=/^[a-zA-Z0-9-_]{6,20}$/
        if(!reg.test(password.value)){
          span.innerHTML='请输入6至20位字母、数字和符号组合'
          return false
        }
        span.innerHTML=''
        return true
      }
      //6.密码二次确认
      let confirm=document.querySelector('[name=confirm]')      
      confirm.addEventListener('change',verifyconfirm)
      function verifyconfirm(){
        let span=confirm.nextElementSibling
        if(confirm.value!==password.value){
          span.innerHTML='两次密码不一致,请重新输入密码'
          return false
        }
        span.innerHTML=''
        return true
      }
      //7.已阅读
      let queren=document.querySelector('.icon-queren')
      queren.addEventListener('click',function(){
        this.classList.toggle('icon-queren2')
      })
      //8.下一步
      let form=document.querySelector('form')
      form.addEventListener('submit',function(e){
        if(!verifyUsername()){
          e.preventDefault()
        }
        if(!verifyphone()){
          e.preventDefault()
        }
        if(!verifycode()){
          e.preventDefault()
        }
        if(!verifypassword()){
          e.preventDefault()
        }
        if(!verifyconfirm()){
          e.preventDefault()
        }
        if(!queren.classList.contains('icon-queren2')){
          alert('请勾选已阅读并同意')
          e.preventDefault()
        }     
      })
    }());  
  </script>
</body>

</html>

2.小兔仙登录案例

1.遇到的问题:required-------h5新特性,里面必须有字段,不填写则有提示框

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