php+ajax+jq

时间:2023-03-08 16:01:35
  1. <html>
  2. <head>
  3. <meta charset="UTF-8">
  4. <title>JQueryAjax+PHP</title>
  5. <script type="text/javascript" src="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. echo "操作完毕";
  6. ?>
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="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>