Question

我有一个ajax函数输出+1和-1的结果，在javascript中，我想获得在colorbox中使用的+1响应。这是ajax函数：

function my_ajax_obj_lightbox() {
    global $post;

    if ( !empty( $_POST['obj_id'] ) ) {

        $obj = new My_Obj( $_POST['obj_id'] );

        if ( $obj instanceof My_Obj ) {
            my_objs_ajax_response_string( 1, $obj->html() );
        }
    }

    my_objs_ajax_response_string( -1,  'Invalid request' );
}
add_filter( 'wp_ajax_obj_lightbox', 'my_ajax_obj_lightbox' );

现在，在javascript中，我想说这样的话：

var response = ......; 
    if ( response[0] >= 1 ) {
            j.fn.colorbox({
            html: response[1],
            maxWidth: '90%',
            maxHeight: '90%'
            });
            }

如何定义var响应并将ajax响应作为值？

Answer 1

听起来你需要帮助设置AJAX请求，并将响应解析为JavaScript对象......

假设您有一个PHP文件，它以JSON格式返回响应：

<?php
    header('Content-type: application/json');
?>
[1, "<h2><?php echo $_POST['title'] ?></h2>"]

要使用AJAX检索此内容，您可以执行以下操作：

<script>

  // Create the AJAX request object.
  var request = new XMLHttpRequest();

  // Define a function to handle the response.
  request.onreadystatechange = function() {

    // If the response is ready
    if (request.readyState == 4 && 
      request.status == 200) {

      // Transform the response into a JavaScript object.
      var response = eval(request.responseText);
      /*
      "response" is now a JavaScript array containing two values.
      */

      console.log(response[0]);
      /*
      1
      */

      console.log(response[1]);
      /*
      <h2>Hello World</h2>
      */

      // Write the contents of the response to an element on the page.
      if (response[0] >= 1) {
        var div = document.createElement("div");
        div.innerHTML = response[1];
        document.body.appendChild(div);
      }
    }
  };

  // Define some variables that we want to send to the server.
  var params = "foo=bar&baz=qux&title=" + encodeURIComponent("Hello World");

  // Post the data, and load the response asynchronously.
  request.open("POST", "/ajax-response.php", true);
  request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  request.send(params);
</script>

如果你正在使用jQuery，这里是等效的代码：

<script>
  $.post("/ajax-response.php", {
      foo: "bar",
      baz: "qux",
      title: "Hello World"
    },
    function(response) {
      if (response[0] >= 1) {
        $("body").append(response[1]);
      }
    }
  );
</script>

jQuery帖子的文档： http://api.jquery.com/jQuery.post/

如何选择在colorbox javascript中使用的ajax响应？

1 个答案: