Javascript 将UTF-8编码的JSON从DB解析为JS_Javascript_Php_Json_Encoding_Utf 8

Javascript 将UTF-8编码的JSON从DB解析为JS

javascript php json encoding utf-8

Javascript 将UTF-8编码的JSON从DB解析为JS,javascript,php,json,encoding,utf-8,Javascript,Php,Json,Encoding,Utf 8,我的数据库中有以下列，其中包含UTF-8编码字母：中文单词 nǐhǎo console.log（值）给出：null 如果我把它们改成非UTF-8 中文单词倪浩 console.log（值）给出：ni hao 如果我只说一句话中文单词 nǐ console.log（值）给出：n？ jQuery: function getData (functionToRun) { $.getJSON("phpscripts.php", {"_functionToRun" : f

我的数据库中有以下列，其中包含UTF-8编码字母：

中文单词
nǐhǎo

console.log（值）给出：

null

如果我把它们改成非UTF-8

中文单词
倪浩

console.log（值）给出：

ni hao

如果我只说一句话

中文单词
nǐ

console.log（值）给出：

n？

jQuery:

function getData (functionToRun) {  
    $.getJSON("phpscripts.php", {"_functionToRun" : functionToRun},
        function (returned_data) {                      
            var value = returned_data.chineseWords;         
            console.log(value);
        }
    );
}

$qry = 
    'SELECT * 
    FROM tasks
    WHERE npc_id_fk = 1';

$result = $mysqli->query($qry) or die(mysqli_error($mysqli));

while ($row = $result->fetch_assoc()) {
    echo json_encode($row);
}

<!DOCTYPE html>
<html>
    <head>
        <title>Playground</title>
        <meta charset="UTF-8">

PHP:

function getData (functionToRun) {  
    $.getJSON("phpscripts.php", {"_functionToRun" : functionToRun},
        function (returned_data) {                      
            var value = returned_data.chineseWords;         
            console.log(value);
        }
    );
}

$qry = 
    'SELECT * 
    FROM tasks
    WHERE npc_id_fk = 1';

$result = $mysqli->query($qry) or die(mysqli_error($mysqli));

while ($row = $result->fetch_assoc()) {
    echo json_encode($row);
}

<!DOCTYPE html>
<html>
    <head>
        <title>Playground</title>
        <meta charset="UTF-8">

为什么浏览器会输出

null

和

n？

编辑：下面，我尝试了：

console.log（解码组件（值））//输出：n？


编辑2:
<?php 
$mysqli = new mysqli("localhost", "root", "", "my_db");

if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: (Error code: " . $mysqli->connect_errno . ")... " . $mysqli->connect_error;
}
?>

连接：
<?php 
$mysqli = new mysqli("localhost", "root", "", "my_db");

if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: (Error code: " . $mysqli->connect_errno . ")... " . $mysqli->connect_error;
}
?>

index.php:
function getData (functionToRun) {  
    $.getJSON("phpscripts.php", {"_functionToRun" : functionToRun},
        function (returned_data) {                      
            var value = returned_data.chineseWords;         
            console.log(value);
        }
    );
}

$qry = 
    'SELECT * 
    FROM tasks
    WHERE npc_id_fk = 1';

$result = $mysqli->query($qry) or die(mysqli_error($mysqli));

while ($row = $result->fetch_assoc()) {
    echo json_encode($row);
}   

<!DOCTYPE html>
<html>
    <head>
        <title>Playground</title>
        <meta charset="UTF-8">


游乐场
在HTML标题中添加：
<meta charset="UTF-8">

在db mysql_连接之后但在查询之前
JS解析UTF8字符串没有问题。@Cookie Monster你知道为什么它会输出null
吗？不，我不知道。HTTP头没有正确设置？也许可以尝试发出一个本机XHR请求，并查看响应文本，看看它是否符合您的预期。