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php+ajax+jq

  1. <html
  2. <head
  3. <meta charset="UTF-8"
  4. <title>JQueryAjax+PHP</title
  5. <script type="text/javascript" src=http://www.mamicode.com/"https://code.jquery.com/jquery-3.0.0.min.js"></script
  6. </head
  7. <body
  8.     用户名:<input type="text" id="username" name="username" /><br
  9.     密码:<input type="password" id="password" name="password" /><br
  10.     <button type="button" class="butn">ajax提交</button><br
  11.     <span class="con"></span
  12. <script type="text/javascript"
  13. $(document).ready(function(){ 
  14.     $(".butn").click(function(){ 
  15.         var username = $("#username").val(); 
  16.         var password = $("#password").val(); 
  17.         $.post(‘ajax.php‘,{name:username,pwd:password},function(data) { 
  18.             alert(data); 
  19.             $(".con").html(data); 
  20.         }) 
  21.     }) 
  22. }) 
  23. </script
  24. </body
  25. </html
<html>
<head>
<meta charset="UTF-8">
<title>JQueryAjax+PHP</title>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.0.0.min.js"></script>
</head>
<body>
    用户名:<input type="text" id="username" name="username" /><br>
    密码:<input type="password" id="password" name="password" /><br>
    <button type="button" class="butn">ajax提交</button><br>
    <span class="con"></span>
<script type="text/javascript">
$(document).ready(function(){
    $(".butn").click(function(){
        var username = $("#username").val();
        var password = $("#password").val();
        $.post(‘ajax.php‘,{name:username,pwd:password},function(data) {
            alert(data);
            $(".con").html(data);
        })
    })
})
</script>
</body>
</html>

 

ajax.php:

 

 

  1. ajax.php 
  2. <?php  
  3. echo ‘用户名:‘,$_POST[‘name‘],‘,密码:‘,$_POST[‘pwd‘]."<br>"; 
  4. //这里可以进行一些操作,比如数据库交互 
  5.  
  6.  
  7. echo "操作完毕"; 
  8. ?> 
ajax.php
<?php 
echo ‘用户名:‘,$_POST[‘name‘],‘,密码:‘,$_POST[‘pwd‘]."<br>";
//这里可以进行一些操作,比如数据库交互


echo "操作完毕";
?>

 

在非json格式下,后台只能返回字符串,如果想后台返回数组,可以采用json格式

 

例如将JQueryAjax中的代码修改为如下形式:

  1. <html
  2. <head
  3. <meta charset="UTF-8"
  4. <title>JQueryAjax+PHP</title
  5. <script type="text/javascript" src=http://www.mamicode.com/"https://code.jquery.com/jquery-3.0.0.min.js"></script
  6. </head
  7. <body
  8.     用户名:<input type="text" id="username" name="username" /><br
  9.     密码:<input type="password" id="password" name="password" /><br
  10.     <button type="button" class="butn">ajax提交</button><br
  11.     <span class="con"></span
  12. <script type="text/javascript"
  13. $(document).ready(function(){ 
  14.     $(".butn").click(function(){ 
  15.         var username = $("#username").val(); 
  16.         var password = $("#password").val(); 
  17.         $.ajax({ 
  18.              url: "ajax.php",   
  19.              type: "POST", 
  20.              data:{name:username,pwd:password}, 
  21.              dataType: "json", 
  22.              error: function(){   
  23.                  alert(‘Error loading XML document‘);   
  24.              },   
  25.              success: function(data,status){//如果调用php成功  
  26.                 alert(status); 
  27.                 alert(data); 
  28.                 $(‘.con‘).html("用户名:"+data[0]+"密码:"+data[1]); 
  29.              } 
  30.         }); 
  31.     }) 
  32. }) 
  33. </script
  34. </body
  35. </html
<html>
<head>
<meta charset="UTF-8">
<title>JQueryAjax+PHP</title>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.0.0.min.js"></script>
</head>
<body>
    用户名:<input type="text" id="username" name="username" /><br>
    密码:<input type="password" id="password" name="password" /><br>
    <button type="button" class="butn">ajax提交</button><br>
    <span class="con"></span>
<script type="text/javascript">
$(document).ready(function(){
    $(".butn").click(function(){
        var username = $("#username").val();
        var password = $("#password").val();
        $.ajax({
             url: "ajax.php",  
             type: "POST",
             data:{name:username,pwd:password},
             dataType: "json",
             error: function(){  
                 alert(‘Error loading XML document‘);  
             },  
             success: function(data,status){//如果调用php成功 
                alert(status);
                alert(data);
                $(‘.con‘).html("用户名:"+data[0]+"密码:"+data[1]);
             }
        });
    })
})
</script>
</body>
</html>

php+ajax+jq