jQuery的ajax()函数不起作用，甚至没有被承认。

huangapple
go评论81阅读模式
英文:

jquery ajax() function not working or even being acknowledged

问题

  1. 我目前正在开发一个项目，使用了jquery的ajax函数。我只想让ajax函数在单击某个按钮时从服务器上显示一个文件中的一些文本，但是当我点击按钮时它什么也没发生。我尝试添加一个错误消息，但似乎也不起作用。我确保使用了支持ajax函数的jquery版本，甚至复制粘贴了我知道有效的代码，但似乎一切都不起作用。
  3. 我的javascript文件
  5. window.onload=loadDoc(); 
  7. $(document).ready(function(){   // 应该被调用的函数
  9.     $("#accountInfo").click(function(){
  11.         $.ajax({url: "accountPerks.txt",  
  12.             error: function(xhr, status, error) {
  13.                 var err = eval("(" + xhr.responseText + ")");
  14.                 alert(err.Message); 
  15.             },
  16.         success: function(result){ 
  18.             $("#perksDiv").text(result);
  20.         }});
  22.     });
  24. });  
  26. // 以下所有内容都是用于不同页面的函数
  28. $(document).ready(function(){ 
  30.     $("#member1Info").click(function(){ 
  32.         $("#BandMember1").css("visibility", "visible");
  34.     });
  36. }); 
  37. $(document).ready(function(){ 
  39.     $("#member2Info").click(function(){ 
  41.         $("#BandMember2").css("visibility", "visible");
  43.     });
  45. }); 
  47. $(document).ready(function(){ 
  49.     $("#member3Info").click(function(){ 
  51.         $("#BandMember3").css("visibility", "visible");
  53.     });
  55. });
  57. function newAlbum(){  
  59.     
  60.     var node = document.createElement("li"); 
  61.     var textNode = document.createTextNode("aaaaallllpxas(2023)"); 
  62.     node.appendChild(textNode); 
  63.     document.getElementById("albumList").appendChild(node); 
  64.     
  65.     $("#sneakPeak").css("visibility", "hidden");
  66. }
  69. var getAlbum = document.getElementById("sneakPeak");  
  70. getAlbum.onclick=function(){ 
  72.     newAlbum();
  73. }
  74.   
  75. function loadDoc() { 
  76.     var xhttp = new XMLHttpRequest(); 
  77.    xhttp.onreadystatechange = function(){ 
  78.        if(xhttp.readyState == 4 && xhttp.status == 200){ 
  79.            document.getElementById("ExtraText").innerHTML = xhttp.responseText;
  80.        }
  81.    }; 
  82.    xhttp.open("GET", "TourInfo.txt", true); 
  83.    xhttp.send();
  84. }

我想要文本文件显示在的页面

  1. <?php 
  2. session_start(); 
  3. ?>
  5. <!doctype html>
  7. <html lang="en">
  8. <head>
  9.     <meta charset="utf-8">
  10.     <title>CMP204 Unit Two Coursework Template</title>
  11.     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
  12.     <link rel="stylesheet" href="css/style.css">
  13.     
  14. </head>
  15. <body> 
  16. <h1>User Profile</h1>
  17.     <nav>
  18.         <?php include_once "includes/links.php" ?>
  19.     </nav>
  20. <?php 
  22.     echo "Welcome " . $_SESSION["accountName"] . ".<br>"; 
  23. ?> 
  25. <button id="accountInfo" type="button" class="btn btn-info btn-md">Click here to learn about account privileges</button> <!-- 这个按钮应该显示来自服务器的文本 -->
  26. <p id="perksDiv"> <p>    <!-- 服务器的文本应该显示在这个段落里 -->
  28. <div class="container-fluid">
  29.     <div class="row">  
  30.         <div class="col-sm-4"> 
  31.         <form action="addGigsAttended.php" method="post"> 
  32.             add gig attended 
  33.             <input type="text" name="GigToAdd"> 
  34.             <input type="submit"> 
  35.         </form> 
  36.          
  37.         </div>  
  39.         
  40.         <div class="col-sm-4"> 
  41.         <form action="editGigsAttended.php" method="post"> 
  42.             edit gig you want to change
  43.             <input type="text" name="GigToEdit">  
  44.             <br> 
  45.             select gig to replace it with
  46.             <input type="text" name="GigToReplace">
  47.             <input type="submit"> 
  48.         </form> 
  49.         </div>  
  52.         <div class="col-sm-4"> 
  53.         <form action="deleteGigsAttended.php" method="post"> 
  54.             delete gig attended 
  55.             <input type="text" name="GigToDelete"> 
  56.             <input type="submit"> 
  57.             </form>
  58.              
  59.             
  60.         </div>
  61.     </div>   
  62. </div> 
  63. <p>Here are all the gigs you have attended</p> 
  64. </br> 
  65. <?php 
  66. $servername = "lochnagar.abertay.ac.uk";
  67. $username = "sql2100904";
  68. $password = "ftAYZgzXz6au";
  69. $dbname = "sql2100904"; 
  70. $conn = mysqli_connect($servername, $username, $password, $dbname); 
  71. $accountName = $_SESSION["accountName"];
  72. $getGigs = mysqli_prepare($conn, "SELECT gigName FROM $accountName"); 
  73. $results = mysqli_stmt_execute($getGigs); 
  74. mysqli_stmt_bind_result($getGigs, $GigLocation); 
  76. while (mysqli_stmt_fetch($getGigs)) {
  77.     echo $GigLocation . " ";
  78. }
  80.     mysqli_stmt_close($getGigs); 
  81.     myslqi_close($conn);
  83. ?>
  89.     <!--这些脚本是Bootstrap所必需的，必须放在关闭body标签之前-->
  90.     <script src="https://code.jquery.com/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
  91.     <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
  92.     <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
  93.     <script src="javascript/script2.js"></script>
  94. </body>
  95. </html>
英文:

I'm currently developing a project which uses the jquery ajax function. I just want the ajax function to display some text from a file on a server when a certain button is clicked but when I click on the button it does nothing. I've tried adding in an error message but that doesn't seem to be working either. I've made sure to use a version of jquery which supports the ajax function and I've even copied and pasted code from sources that I know work but nothing seems to be working.

my java script file

  1. window.onload=loadDoc(); 
  2. $(document).ready(function(){   // the function that should be getting called 
  3. $(&quot;#accountInfo&quot;).click(function(){ 
  4. $.ajax({url: &quot;accountPerks.txt&quot;,  
  5. error: function(xhr, status, error) {
  6. var err = eval(&quot;(&quot; + xhr.responseText + &quot;)&quot;);
  7. alert(err.Message); 
  8. },
  9. success: function(result){ 
  10. $(&quot;#perksDiv&quot;).text(result);
  11. }});
  12. });
  13. });  
  14. //everything below here are functions for separate pages  
  15. $(document).ready(function(){ 
  16. $(&quot;#member1Info&quot;).click(function(){ 
  17. $(&quot;#BandMember1&quot;).css(&quot;visibility&quot;, &quot;visible&quot;);
  18. });
  19. }); 
  20. $(document).ready(function(){ 
  21. $(&quot;#member2Info&quot;).click(function(){ 
  22. $(&quot;#BandMember2&quot;).css(&quot;visibility&quot;, &quot;visible&quot;);
  23. });
  24. }); 
  25. $(document).ready(function(){ 
  26. $(&quot;#member3Info&quot;).click(function(){ 
  27. $(&quot;#BandMember3&quot;).css(&quot;visibility&quot;, &quot;visible&quot;);
  28. });
  29. });
  30. function newAlbum(){  
  31. var node = document.createElement(&quot;li&quot;); 
  32. var textNode = document.createTextNode(&quot;aaaaallllpxas(2023)&quot;); 
  33. node.appendChild(textNode); 
  34. document.getElementById(&quot;albumList&quot;).appendChild(node); 
  35. $(&quot;#sneakPeak&quot;).css(&quot;visibility&quot;, &quot;hidden&quot;);
  36. }
  37. var getAlbum = document.getElementById(&quot;sneakPeak&quot;);  
  38. getAlbum.onclick=function(){ 
  39. newAlbum();
  40. }
  41. function loadDoc() { 
  42. var xhttp = new XMLHttpRequest(); 
  43. xhttp.onreadystatechange = function(){ 
  44. if(xhttp.readyState == 4 &amp;&amp; xhttp.status == 200){ 
  45. document.getElementById(&quot;ExtraText&quot;).innerHTML = xhttp.responseText;
  46. }
  47. }; 
  48. xhttp.open(&quot;GET&quot;, &quot;TourInfo.txt&quot;, true); 
  49. xhttp.send();
  50. }

The page I want the text file to appear on

  1. &lt;?php 
  2. session_start(); 
  3. ?&gt;
  4. &lt;!doctype html&gt;
  5. &lt;html lang=&quot;en&quot;&gt;
  6. &lt;head&gt;
  7. &lt;meta charset=&quot;utf-8&quot;&gt;
  8. &lt;title&gt;CMP204 Unit Two Coursework Template&lt;/title&gt;
  9. &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/css/bootstrap.min.css&quot; integrity=&quot;sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh&quot; crossorigin=&quot;anonymous&quot;&gt;
  10. &lt;link rel=&quot;stylesheet&quot; href=&quot;css/style.css&quot;&gt;
  11. &lt;/head&gt;
  12. &lt;body&gt; 
  13. &lt;h1&gt;User Profile&lt;/h1&gt;
  14. &lt;nav&gt;
  15. &lt;?php include_once &quot;includes/links.php&quot; ?&gt;
  16. &lt;/nav&gt;
  17. &lt;?php 
  18. echo &quot;Welcome &quot; . $_SESSION[&quot;accountName&quot;] . &quot;.&lt;br&gt;&quot;; 
  19. ?&gt; 
  20. &lt;button id=&quot;accountInfo&quot; type=&quot;button&quot; class=&quot;btn btn-info btn-md&quot;&gt;Click here to learn about account privileges&lt;/button&gt; // this button should display the text from the server 
  21. &lt;p id=&quot;perksDiv&quot;&gt; &lt;p&gt;    // the text from the server should be showing in this paragraph   
  22. &lt;div class=&quot;container-fluid&quot;&gt;
  23. &lt;div class=&quot;row&quot;&gt;  
  24. &lt;div class=&quot;col-sm-4&quot;&gt; 
  25. &lt;form action=&quot;addGigsAttended.php&quot; method=&quot;post&quot;&gt; 
  26. add gig attended 
  27. &lt;input type=&quot;text&quot; name=&quot;GigToAdd&quot;&gt; 
  28. &lt;input type=&quot;submit&quot;&gt; 
  29. &lt;/form&gt; 
  30. &lt;/div&gt;  
  31. &lt;div class=&quot;col-sm-4&quot;&gt; 
  32. &lt;form action=&quot;editGigsAttended.php&quot; method=&quot;post&quot;&gt; 
  33. edit gig you want to change
  34. &lt;input type=&quot;text&quot; name=&quot;GigToEdit&quot;&gt;  
  35. &lt;br&gt; 
  36. select gig to replace it with
  37. &lt;input type=&quot;text&quot; name=&quot;GigToReplace&quot;&gt;
  38. &lt;input type=&quot;submit&quot;&gt; 
  39. &lt;/form&gt; 
  40. &lt;/div&gt;  
  41. &lt;div class=&quot;col-sm-4&quot;&gt; 
  42. &lt;form action=&quot;deleteGigsAttended.php&quot; method=&quot;post&quot;&gt; 
  43. delete gig attended 
  44. &lt;input type=&quot;text&quot; name=&quot;GigToDelete&quot;&gt; 
  45. &lt;input type=&quot;submit&quot;&gt; 
  46. &lt;/form&gt;
  47. &lt;/div&gt;
  48. &lt;/div&gt;   
  49. &lt;/div&gt; 
  50. &lt;p&gt;Here are all the gigs you have attended&lt;/p&gt; 
  51. &lt;/br&gt; 
  52. &lt;?php 
  53. $servername = &quot;lochnagar.abertay.ac.uk&quot;;
  54. $username = &quot;sql2100904&quot;;
  55. $password = &quot;ftAYZgzXz6au&quot;;
  56. $dbname = &quot;sql2100904&quot;; 
  57. $conn = mysqli_connect($servername, $username, $password, $dbname); 
  58. $accountName = $_SESSION[&quot;accountName&quot;];
  59. $getGigs = mysqli_prepare($conn, &quot;SELECT gigName FROM $accountName&quot;); 
  60. $results = mysqli_stmt_execute($getGigs); 
  61. mysqli_stmt_bind_result($getGigs, $GigLocation); 
  62. while (mysqli_stmt_fetch($getGigs)) {
  63. echo $GigLocation . &quot; &quot;;
  64. }
  65. mysqli_stmt_close($getGigs); 
  66. myslqi_close($conn);
  67. ?&gt;
  68. &lt;!--these scripts are necessary for Bootstrap and must be before the close body tag--&gt;
  69. &lt;script src=&quot;https://code.jquery.com/jquery-3.4.1.min.js&quot; integrity=&quot;sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=&quot; crossorigin=&quot;anonymous&quot;&gt;&lt;/script&gt;
  70. &lt;script src=&quot;https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js&quot; integrity=&quot;sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo&quot; crossorigin=&quot;anonymous&quot;&gt;&lt;/script&gt;
  71. &lt;script src=&quot;https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/js/bootstrap.min.js&quot; integrity=&quot;sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6&quot; crossorigin=&quot;anonymous&quot;&gt;&lt;/script&gt;
  72. &lt;script src=&quot;javascript/script2.js&quot;&gt;&lt;/script&gt;
  73. &lt;/body&gt;
  74. &lt;/html&gt;

答案1

得分: 2

只使用一个$(document)函数，如果你使用太多的$(document)函数，那么响应中只会返回最后一个。

  1. $(document).ready(function(){
  2.   // 在此处使用一个文档就绪函数并编写你的代码
  3. })
  4. 然后使用你想要运行的其他函数加载到window.load函数中。
英文:

Use only 1 document function, if you will use too many $(document) functions than in response only last one will be returend.

  1. $(document).ready(function(){
  2. //use one doc ready and do your code in this
  3. })

And use your other function that you want to run will be loaded in window.load function

huangapple
  • 本文由 发表于 2023年1月9日 05:13:35
  • 转载请务必保留本文链接：https://go.coder-hub.com/75051341.html
  • ajax
  • jquery
  • php
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定