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console 命令行工具 X clear

                    
>
console
$(document).ready(function(){
  $("#flip").click(function(){
    $("#panel").slideToggle("slow");
  });
});

$(document).ready(function(){
  $("button").click(function(){
    $("p").hide("slow",function(){
      alert("段落现在被隐藏了");
    });
  });
});

$(document).ready(function(){
	$("button").click(function(){
		$("#h").offsetParent().css("background-color","red");
	});
});
<body>
<h1>登录爱奇艺,悦享品质生活</h1>
  <p></p>
</body>

    <center>
        
        <title>Untitled Document</title>
        <script language="javascript">
            function checkname(){
                var div = document.getElementById("div1");
                div.innerHTML = "";
                var name1 = document.form1.text1.value;
                if (name1 == "") {
                    div.innerHTML = "姓名不能为空!";
                    document.form1.text1.focus();
                    return false;
                }
                if (name1.length < 4 || name1.length > 16) {
                    div.innerHTML = "姓名输入的长度4-16个字符!";
                    document.form1.text1.select();
                    return false;
                }
                var charname1 = name1.toLowerCase();
                for (var i = 0; i < name1.length; i++) {
                    var charname = charname1.charAt(i);
                    if (!(charname >= 0 && charname <= 9) && (!(charname >= 'a' && charname <= 'z')) && (charname != '_')) {
                        div.innerHTML = "姓名包含非法字母,只能包含字母,数字,和下划线";
                        document.form1.text1.select();
                        return false;
                    }
                }
                return true;
                
            }
            
            function checkpassword(){
                var div = document.getElementById("div2");
                div.innerHTML = "";
                var password = document.form1.text2.value;
                if (password == "") {
                    div.innerHTML = "密码不位空!";
                    document.form1.text2.focus();
                    return false;
                }
                if (password.length < 4 || password.length > 12) {
                    div.innerHTML = "密码长度4-12位";
                    document.form1.text2.select();
                    return false;
                }
                return true;
            }
            
            function checkrepassword(){
                var div = document.getElementById("div3");
                div.innerHTML = "";
                var password = document.form1.text2.value;
                var repass = document.form1.text3.value;
                if (repass == "") {
                    div.innerHTML = "密码不位空!";
                    document.form1.text3.focus();
                    return false;
                }
                if (password != repass) {
                    div.innerHTML = "输入密码和确认密码长度不一致";
                    document.form1.text3.select();
                    return false;
                }
                return true;
            }
            
            function checkEmail(){
                var div = document.getElementById("div4");
                div.innerHTML = "";
                var email = document.form1.text5.value;
                var sw = email.indexOf("@", 0);
                var sw1 = email.indexOf(".", 0);
                var tt = sw1 - sw;
                if (email.length == 0) {
                    div.innerHTML = "电子邮件不能位空";
                    document.form1.text5.focus();
                    return false;
                }
                if (email.indexOf("@", 0) == -1) {
                    div.innerHTML = "电子邮件格式不正确,必须包含@符号!";
                    document.form1.text5.select();
                    return false;
                }
                if (email.indexOf(".", 0) == -1) {
                    div.innerHTML = "电子邮件格式不正确,必须包含.符号!";
                    document.form1.text5.select();
                    return false;
                }
                if (tt == 1) {
                    div.innerHTML = "邮件格式不对。@和.不可以挨着!";
                    document.form1.text5.select();
                    return false;
                }
                if (sw > sw1) {
                    div.innerHTML = "电子邮件格式不正确,@符号必须在.之前";
                    document.form1.text5.select();
                    return false;
                }
                else {
                    return true;
                }
                
                return ture;
            }
            
            function check(){
                if (checkname() && checkpassword() && checkrepassword() && checkEmail()) {
                    return true;
                }
                else {
                    return false;
                }
            }
        </script>
    
      
<body>

<button id="h">设置背景颜色</button>
<div style="border:1px solid black;width:500px;hight:500px;position:absolute;left:30px;top:100px">
<div style="border:1px solid black;hight:500px;margin:50px;background-color:yellow">
<h>


	

      
      
      <body>
<button id="p">隐藏</button>
<p>

      
    <body>
        <form name="form1" method="post" action="2.html" onsubmit="return check()">
            <table>
                <tr>
                    <td>
                        用户名:
                    </td>
                    <td>
                        <input id="text1" type="text" name="text1" onblur="check()">
                        <div id="div1" style="display:inline">
                        </div>
                    </td>
                </tr>
     <tr>
                    <td>
                        手机:
                    </td>
                    <td>
                        <input id="text1" type="text" name="text1" onblur="check()">
                        <div id="div1" style="display:inline">
                        </div>
                    </td>
                </tr>          
              
              
              
                <tr>
                    <td>
                        密码:
                    </td>
                    <td>
                        <input id="text2" type="password" name="text2" onblur="check()">
                        <div id="div2" style="display:inline">
                        </div>
                    </td>
                </tr>
                <tr>
                    <td>
                        确认密码:
                    </td>
                    <td>
                        <input id="text3" type="password" name="text3" onblur="check()">
                        <div id="div3" style="display:inline">
                        </div>
                    </td>
                </tr>
      <tr>
                    <td>
                        验证码:
                    </td>
                    <td>
                        <input id="text1" type="text" name="text1" onblur="check()">
                        <div id="div1" style="display:inline">
                        </div>
                    </td>
                </tr>         
              
          
                <tr>
                    <td>
                        电子邮件地址:
                    </td>
                    <td>
                        <input id="text4" type="text" name="text4" onblur="check()">
                        <div id="div4" style="display:inline">
                        </div>
                    </td>
                </tr>
              
              
              
              
              
                <tr align="center">
                    <td align="center">
      <input type="checkbox" name="vehicle" value="Car">我同意《用户服务协议》
                      <p><a href="http://passport.pps.tv/pages/user/login.action?btnId=userhome&url=http%3A%2F%2Fup.ipd.pps.tv%2Fupload%3Ftype%3D0%26ufrm%3Dweb_iqiyi_uc">立即登录</a></p>
                        <input type="submit" value="注册" name="tect6"><input type="reset" value="取消" name="text7">
  <script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<div id="flip">使用其他方式登录</div>
<div id="panel">
  <div> 短信登录</div>
  <div>手机扫码登录</div>
  
                      
                      </div>

                      
    <p>^</p>                 
                      
                      
                    </td>
                </tr>
              
            </table>
        </form>
    </body>
  </h>
</body>
     </body>   
</center>
body
{
	background-image:url("http://pic34.photophoto.cn/20150318/0017030532235937_b.jpg");
	background-color:#cccccc;
  background-size:cover;
  background-repeat:no-repeat;
}

#panel,#flip
{
	padding:5px;
	text-align:center;
	background-color:#e5eecc;
	border:solid 1px #c3c3c3;
}
#panel
{
	padding:50px;
	display:none;
}

本项目引用的自定义外部资源