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JavaScript

程序员文章站 2022-03-08 22:54:52
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JavaScript是一个脚本语言，解释执行（看一行执行一行）浏览器运行

今天先做了一个注册界面，代码如下：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script action="#">
        function checkFrom() {
            var input1=document.getElementById("username").value;
            if(name.length<6){
                alert("长度太短");
                return false;
            }
            var ps=document.getElementById("password").value;
            var reps=document.getElementById("repassword").value;
            if (ps!=reps){
                alert("2次输入的密码不一样");
                return false;
            }
            var phone=document.getElementById("mobile").value;
            /*1   3456789   9(0-9)  11位*/
            /*正则表达式*/
            if (!/^1(3|4|5|6|7|8|9)\d{9}$/.test(phone)){
                alert("手机格式不对");
                return false;
            }
        }
    </script>
</head>
<body>
<form action="#">
    <div>用户名:<input id="username" type="text"></div>
    <div>密码:<input id="password" type="password"></div>
    <div>确认密码:<input id="repassword" type="password"></div>
    <div>手机号:<input id="mobile" type="number"></div>
    <div><input type="submit" value="注册" onclick="checkFrom()"/></div>
</form>
</body>
</html>

效果如下：
JavaScript

轮播图实现带左右按钮控制焦点图片切换和自动播放效果

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>实现带左右按钮控制焦点图片切换</title>
<style type="text/css">
*{margin:0;padding:0;}
ul,li{list-style:none;}
img{border:0;}
.wrapper{
	width: 800px;
	margin: 0 auto;
	padding-bottom: 50px;
}
#focus{
	width: 800px;
	height: 280px;
	overflow: hidden;
	position: relative;
}
#focus ul{
	height: 380px;
	position: absolute;
}
#focus ul li{
	float: left;
	width: 800px;
	height: 280px;
	overflow: hidden;
	position: relative;
	background: #000;
}
#focus ul li div{
	position: absolute;
	overflow: hidden;
}
#focus .preBtn{
	width: 45px;
	height: 100px;	
	left: 0;
	top:90px;
	background:url(images/spirte.png) no-repeat 0 0;
	background-color:#000;
	cursor: pointer;
	opacity:0.4;
	filter:alpha(opacity=40);
}
#focus .nextBtn{
	width: 45px;
	height: 100px;
	right:0px;
	top:90px;
	background:url(images/spirte.png) no-repeat right top;
	background-color:#000;
	cursor: pointer;	
	opacity:0.4;
	filter:alpha(opacity=40);}
</style>

<!-- 请在此处添加javascript代码实现需求 -->
  <script type="text/javascript">
      var picArr=new Array();
      picArr[0]="images/01.jpg";
      picArr[1]="images/02.jpg";
      picArr[2]="images/03.jpg";
      picArr[3]="images/04.jpg";
      picArr[4]="images/05.jpg";
      var index=0;
      var timer=0;
      window.onload=showPic;
      function showNext() {
          clearTimeout(timer)
          showPic();

      }
      function showPic () {
          document.getElementById("pic").src=picArr[index];
          if(index<(picArr.length-1)){
              index++;
          }else{
               index=0;
              }
         setTimeout("showPic()",2000);
      }
  </script>

</head>

<body>
<div class="wrapper">
  <div id="focus">
    <ul>
      <li><a href="#" target="_blank"><img src="images/01.jpg" alt="" id="pic"/></a>
      <div class="preBtn" onclick="showPre()"></div>
      <div class="nextBtn" onclick="showNext()"></div> 
      </li>      
    </ul>     
  </div>
</div>
</body>
</html>

效果如下：
JavaScript
最后做了一个手机品牌左右交换的界面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        function selectOne() {
            var leftS = document.getElementById("leftSelect");
            var options = leftS.options;

            var rightS = document.getElementById("rightSelect");

            for (var i = 0; i < options.length; i++) {
                var option1 =options[i];
                if (option1.selected) {
                    rightS.appendChild(option1);
                }
            }
        }
    </script>
</head>
<body>
<table width="400px" border="1px">
    <tr>
        <td>分类名称</td>
        <td><input type="text" value="手机数码"></td>
    </tr>
    <tr>
        <td>分类描述</td>
        <td><input type="text" value="手机数码"></td>
    </tr>
    <tr>
        <td>分类商品</td>
        <td>
            <div style="float: left">
                已有商品<br/>
                <select multiple="multiple" id="leftSelect" ondbclick="selectOne()">
                    <option>华为</option>
                    <option>小米</option>
                    <option>诺基亚</option>
                </select>
                <br/>
                <a href="#" onclick="selectOne()">&gt;&gt;</a>
                <a href="#" onclick="select0ne()">&gt;&gt;&gt;</a>
            </div>
            <div style="float: right">
                未选商品<br/>
                <select multiple="multiple" id="rightSelect" ondbclick="selectOne()">
                    <option>苹果</option>
                    <option>三星</option>
                    <option>oppo</option>
                </select>
                <br/>
                <a href="#" onclick="selectOne()">&lt;&lt;</a>
                <a href="#" onclick="selectOne()">&lt;&lt;&lt;</a>
            </div>
        </td>
    </tr>


</table>
</body>
</html>

效果如下：
JavaScript
JavaScript

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