<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>登录界面</title> <style type="text/css"> *{ margin: 0; padding: 0; } h3{ display: block; width: 100%; height: 50px; text-align: center; line-height: 50px; background-color: cornflowerblue; cursor: move; } #login{ width: 500px; height: 270px; margin: 0 auto; position: absolute; top: 50%; left: 50%; margin-left: -250px; margin-top: -140px; border: 1px solid #6495ED; background-color: #FFFFFF; display: block; -moz-user-select: none; -ms-user-select: none; -webkit-user-select: none; } table{ margin-top: 50px; position: absolute; top: 50px; left: 0; width: 100%; height: 150px; text-align:center; } tr,td{ border: none; } tr{ height: 50px; } td{ padding: 0 5px 0 5px; } #bg{ width: 100%; height: 100%; background-color:rgba(0,0,0,0.2); position: absolute; top: 0; left: 0; } span{ width: 100px; height: 16px; display:block; margin-bottom: 12px; } body{ width: 100%; height: 100%; } .inpt{ width: 300px; height: 30px; outline: none; border: 1px solid darkturquoise; } .red{ color: red; font-size: 12px; } .btn{ outline: none; width: 60px; height: 25px; border: 1px solid #00CED1; } </style> <script src="https://www.jb51.net/js/jquery-3.5.1.min.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> $(function () { // 定义变量 var $mX; var $mY; var $move = false; // true是可以移动登录框 // 鼠标按下事件 $("h3").mousedown(function (event) { $("#login").css("opacity",0.5); // 改变透明度 $move = true; // 得到鼠标与登录框原点之间的距离 $mX = event.pageX-parseInt($("#login").css("left")); $mY = event.pageY-parseInt($("#login").css("top")); }) // 鼠标移动事件 $(document).mousemove(function (event) { // 得到登录框要移动的量 var x = (event.pageX-$mX); var y = (event.pageY-$mY); console.log(x,y) if($move){ if(x>0&&y>0){ $("#login").css("left",x+"px") $("#login").css("top",y+"px") } } }).mouseup(function () { // 鼠标弹起事件 $move = false; $("#login").css("opacity",1); }) // 异步请求 $(":submit").click(function () { $.ajax({ type:"get", url:"data.php", data:{"name":$("#user").val(),"password":$("#pwd").val()}, dataType:"json", success:function (data) { console.log("成功：",data); /*if (data.usermsg==1&&data.pwdmsg==1) { $(location).prop("href","index1.html"); } else{ $("span").text("用户名或密码错误").prop("class","red"); }*/ if (data.usermsg==1&&data.pwdmsg==1) { $(location).prop("href","index1.html"); } else if(data.usermsg==0&&data.pwdmsg==0){ $("span").text("用户名或密码错误").prop("class","red"); } else if(data.usermsg==0&&data.pwdmsg==1){ $("span").text("该用户不存在").prop("class","red"); } else if(data.usermsg==1&&data.pwdmsg==0){ $("span").text("密码错误").prop("class","red"); } }, error:function (err) { console.log("失败",err); } }) }) $(":reset").click(function () { $("span").text(""); }) }) </script> </head> <body> <div></div> <form action="javascript:;" method="get"> <h3>欢迎登录！</h3> <table cellspacing="0" cellpadding="0"> <tr> <td>用户名：</td> <td><input type="text"/></td> </tr> <tr> <td>密   码：</td> <td><input type="password"/></td> </tr> <tr> <td colspan="2"> <span></span> <input type="submit" value="提交"/>       <input type="reset" value="重置"/> </td> </tr> </table> </form> </body> </html>
<?php $user="将军"; $password="1234321"; $username=$_GET["name"]; $pwd=$_GET["password"]; $usermsg=0; $pwdmsg=0; if($user==$username){ $usermsg=1; } if($password==$pwd){ $pwdmsg=1; } echo json_encode(array("usermsg"=>$usermsg,"pwdmsg"=>$pwdmsg)); ?>
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>登录成功页面</title> </head> <body> <span> 登录成功 </span> </body> </html>
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>登录失败页面</title> </head> <body> <span> 登录失败 </span> </body> </html>