Question

基本上我想做的事情：

将查询发送到数据库并在PHP中获取响应 - SUCCESS
将响应放入有组织的多维数组（PHP） - SUCCESS
使用JSON对数组进行编码并将其发送到JavaScript - SUCCESS
使用JSON.parse（）解析数据并生成HTML - FAILED

到目前为止我尝试过：

尝试在线JSON解析器 - 完美地工作（http://json.parser.online.fr/）
如上所述，在PHP文件的开头删除了UTF-8句子 here。
试图不使用JSON - 根本不起作用 - Javascript收到string "Array"
无论如何我可以使用typeof（）JSON.stringyfy（）等函数调试我的代码，并在HTML中设置结果以查看结果。

我浪费了8个小时，我失去了希望。

HTML：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title</title>
</head>
<body>
    <div id="output"></div>

    //Some scripts... 

</body>
</html>

PHP：

<!doctype html>
<html>
<head>
<title>Title</title>
</head> 
<?PHP 

//Got the connection, recieved data and now putting it to an array

$qry = "SELECT * FROM img LIMIT 0,9";
    $qry_result = mysql_query($qry) or trigger_error(mysql_error(). " in ".$qry);
    while($row = mysql_fetch_array($qry_result, MYSQL_BOTH)){
        //Store values in multidimensional array for returning

        $arraytoreturn[] = $row;
    }

        //close the connection and return array
        mysql_close($dbhandle); 

        echo json_encode($arraytoreturn);
?>
<body>
</body>
</html>

JavaScript（只有与我的问题有关的函数）：

function drawOutput(response) {
    "use strict";
    var array = JSON.parse(response);
    var container = document.getElementById('output');
    //Try out the code with first item and "ID" that is for sure in my array
    container.innerHTML = array[0].ID;
}

当我不使用JSON.parse（）并在Javascript的最后一行写container.innerHTML = response;时然后我得到了db：

的查询结果

[{"0":"1","ID":"1","1":"569f303b99f31","UID":"569f303b99f31","2":null,"HEADING":null,"3":null,"DESCRIPTION":null},{"0":"2","ID":"2","1":"569f308b900ed","UID":"569f308b900ed","2":null,"HEADING":null,"3":null,"DESCRIPTION":null},{"0":"3","ID":"3","1":"569f3112d4111","UID":"569f3112d4111","2":null,"HEADING":null,"3":null,"DESCRIPTION":null},{"0":"4","ID":"4","1":"569f315428ad7","UID":"569f315428ad7","2":"Horvaatia hommik","HEADING":"Horvaatia hommik","3":null,"DESCRIPTION":null},{"0":"5","ID":"5","1":"569f31943eea2","UID":"569f31943eea2","2":"Riias","HEADING":"Riias","3":null,"DESCRIPTION":null},{"0":"6","ID":"6","1":"569f31ea7f62a","UID":"569f31ea7f62a","2":null,"HEADING":null,"3":null,"DESCRIPTION":null},{"0":"7","ID":"7","1":"569f3266b5b81","UID":"569f3266b5b81","2":"Riias","HEADING":"Riias","3":null,"DESCRIPTION":null},{"0":"8","ID":"8","1":"569f332d883d1","UID":"569f332d883d1","2":"Horvaatia trip - Poolas","HEADING":"Horvaatia trip - Poolas","3":null,"DESCRIPTION":null},{"0":"9","ID":"9","1":"569f33b357d2f","UID":"569f33b357d2f","2":"Soneburg","HEADING":"Soneburg","3":null,"DESCRIPTION":null}]

可能是因为我的数组中的空值？或者是什么？

JSON.parse无法在JavaScript中运行

0 个答案: