index.php文件

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title>Welcome to temp index</title>

    <link rel="stylesheet" href="style.css" type="text/css" />
    <script type="text/javascript" src="scripts/jquery-1.8.3.min[2].js"></script>
    <script type="text/javascript">

        $(document).ready(function() {

            //posts info into the userinfo.php file
            $.post('userinfo.php', { activate:"colourchange"}, function(data){
                $('report').html(data);
            });

            //the function which is meant to be activated from the php file
            function colourchange(){
                document.body.style.backgroundColor = 'green';   
             };         

         }); 

    </script>

</head>

<body>
  <h1>hello</h1>

<div id="report">
</div>

</body>

</html>

PHP文件我试图从

调用我的jQuery函数

<?php

if( $_REQUEST["activate"])
{
  $activate = $_REQUEST['activate'];
};  

if($activate == 'colourchange') 
{
 // This is the code that I believe not to be working as this isn't 
 // activating the jQuery function to work. (The page background isn't changing colour)

    echo "<script>colourchange(); </script>"; 
};

?>

非常感谢任何知道该做什么的人。

我现在试过......

<?php
require 'userinfo.php';
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Welcome to temp index</title>

<link rel="stylesheet" href="style.css" type="text/css" />
<script type="text/javascript" src="scripts/jquery-1.8.3.min[2].js"></script>
<script type="text/javascript">

 function colourchange(){
    document.body.style.backgroundColor = 'green';   
  };



  $(document).ready(function() {
    $.post('userinfo.php', { activate:"colourchange"}, function(data){
      $('report').html(data);
    });    
 }); 


</script>

</head>

<body>
  <h1>hello</h1>

<div id="report">
  </div>



</body>

</html>

并且PHP索引文件是......

<?php


if( $_REQUEST["activate"])
{

  $activate = $_REQUEST['activate'];

};  




  if($activate=='colourchange')
  { 
    echo "colourchange();";
  };

?>

Answer 1

我并不完全理解你为什么要使用PHP来执行jQuery函数 - 也许这只是一个过于简单的例子。假设您的主要目标是让PHP响应触发特定的Javascript函数（并且可能允许PHP响应触发几个不同的响应），您可以执行以下操作：

首先从

更改回调

function(data){
  $('report').html(data);
}

类似于：

function(data) {
  if (data.indexOf("colourchange") >= 0) {  // php page returned "colorchange" or a string containing "colourchange" 
     colourchange();
  } else if (data.indexOf("moodchange") >= 0) {
     moodchange();  /// etc... you can add more trigger functions here
  }
}

第二个......让你的PHP页面返回“colourchange”而不是HTML片段：

if($activate == 'colourchange') 
{
  echo "colourchange"; 
};

这有帮助吗？

Answer 2

你可以尝试这个 - 例子在成功时调用jquery函数

  $.ajax({
     url: //the url,
     data: //the data,
     type: "POST",
     success: function(data){

         if(data == "ok"){
        colorChange();
        }
     }
   });

这里的数据将是php代码返回的成功结果..

您可以根据返回的数据调用函数

从PHP文件调用jQuery函数

index.php文件

PHP文件我试图从

2 个答案: