在JS中从该数组中获取数据 [英] Getting data out of this array in JS

问题描述

最后，我从PHP中获得了一些输出，而不仅仅是单词 array。这花了我一天时间，AAAAHHHH。

Finally i get some output out of PHP instead of just the word "array". This took me a day, AAAAHHHH.

（请参见解决方案）

(see here for the solution)

因此，这是XMLHTTP请求（对PHP）的返回值，通过JS中的回调。我在PHP中使用 print_r 了。

So this is the return value from a XMLHTTP request (to PHP), via a callback in JS. I got it with print_r in PHP.

我在此处发布了一段结果。
我的新问题：

I post a snippet of the results here. My new question:

• 此数据结构是由什么构成的？



• 如何从该结构中获取元素，例如CourseID（在JS中）？

• what is this data structure made of?

• how to get elements out of this structure, such as CourseID (in JS)?

[0] => Parse\ParseObject Object
(
    [serverData:protected] => Array
        (
            [CourseID] => DEMO2
            [EndDate] => DateTime Object
                (
                    [date] => 2017-03-31 10:26:00.000000
                    [timezone_type] => 2
                    [timezone] => Z
                )

            [InfoTitle1] => Welcome
            [InfoText1] => Welcome to your course, called "sense & sales". 
            [Admin] => Remco@Demo1
        )

我的PHP代码是

function getGroups(){
  $query = new ParseQuery("CourseInfo");
 $query->equalTo("Admin", "Remco@Demo1");
 $results = $query->find();


// echo $results      // this lead to the string "array"
//print_r($results);  // this leads to the complicated array
//echo "<script>\r\n var phpOutput = " . json_encode($results) . ";\r\n console.log(phpOutput);\r\n</script>";
// this leads to [{},{}]; 
}

推荐答案

您想要的是JavaScript对象，因此您需要使用JSON。

What you want is a JavaScript Object, so you need to use JSON.

（JSON表示JavaScript对象表示法。）

(JSON means JavaScript Object Notation.)

PHP有一个 json_encode 函数，它将为您完成工作：（ http://php.net/manual/en/function.json-encode.php ）

PHP has a json_encode function, which will do the work for you: (http://php.net/manual/en/function.json-encode.php)

json_encode —返回值的JSON表示形式

json_encode — Returns the JSON representation of a value

尝试以下操作：

PHP：

echo "<script>\r\n var phpOutput = " . json_encode($output) . ";\r\n console.log(phpOutput);\r\n</script>";

在浏览器中按F12键可在开发人员工具中打开浏览器的控制台日志窗口，以查看新的JavaScript对象

Press F12 in your browser to open the browser's Console log window in Developer Tools to see the new JavaScript Object.

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