我想将变量传递到特定页面。我找到了一个简单的示例,解释了如何在Wordpress中使用Ajax。
JavaScript:
jQuery(document).ready(function($) { // We'll pass this variable to the PHP function example_ajax_request var fruit = 'Banana'; // This does the ajax request $.ajax({ url: ajaxurl, data: { 'action':'example_ajax_request', 'fruit' : fruit }, success:function(data) { // This outputs the result of the ajax request console.log(data); }, error: function(errorThrown){ console.log(errorThrown); } }); });
插入的一段PHPfunctions.php
functions.php
function example_ajax_request() { // The $_REQUEST contains all the data sent via ajax if ( isset($_REQUEST) ) { $fruit = $_REQUEST['fruit']; // Let's take the data that was sent and do something with it if ( $fruit == 'Banana' ) { $fruit = 'Apple'; } // Now we'll return it to the javascript function // Anything outputted will be returned in the response echo $fruit; // If you're debugging, it might be useful to see what was sent in the $_REQUEST // print_r($_REQUEST); } // Always die in functions echoing ajax content die(); } add_action( 'wp_ajax_example_ajax_request', 'example_ajax_request' ); wp_localize_script( 'ajax-script', 'ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
不幸的是我不能传递变量。我检查了代码,并得到以下错误:
Error: ajax_object is not defined
您是否知道另一种获得相同结果的方法?
您距离很近,但缺少一些小东西……
我在评论中的意思是,您需要'ajax-script'在两种情况下都使用这种方式:
'ajax-script'
add_action('wp_enqueue_scripts', 'add_js_scripts'); add_js_scripts(){ wp_enqueue_script( 'ajax-script', get_template_directory_uri().'/js/script.js', array('jquery'), '1.0', true ); wp_localize_script( 'ajax-script', 'ajax_object', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) ); }
更改 $_REQUEST 为 $_POST :
$_REQUEST
$_POST
function example_ajax_request() { // The $_REQUEST contains all the data sent via ajax if ( isset($_POST) ) { $fruit = $_POST['fruit']; // Let's take the data that was sent and do something with it if ( $fruit == 'Banana' ) { $fruit = 'Apple'; } // Now we'll return it to the javascript function // Anything outputted will be returned in the response echo $fruit; // If you're debugging, it might be useful to see what was sent in the $_POST // print_r($_POST); } // Always die in functions echoing ajax content die(); }
新增add_action( 'wp_ajax_nopriv_ … ) :
add_action( 'wp_ajax_nopriv_ … )
add_action( 'wp_ajax_nopriv_example_ajax_request', 'example_ajax_request' ); // <= this one add_action( 'wp_ajax_example_ajax_request', 'example_ajax_request' );
对于您的jQuery脚本script.js文件,有2件重要的遗漏小事情:
script.js
jQuery(document).ready(function($) { /* We'll pass this variable to the PHP function example_ajax_request */ var fruit = 'Banana'; /* This does the ajax request */ $.ajax({ url: ajax_object.ajaxurl, /* <====== missing here */ type : 'post', /* <========== and missing here */ data: { 'action':'example_ajax_request', 'fruit' : fruit }, success:function(data) { /* This outputs the result of the ajax request */ console.log(data); }, error: function(errorThrown){ console.log(errorThrown); } }); });
现在应该可以工作了……
参考文献:
在没有插件的情况下在WordPress网站上将AJAX与PHP结合使用
如何在WordPress插件或主题中使用Ajax?