javascript - 尝试通过 php 在数据(chart.js)中输入数据时如何修复[<br/>

Question

我正在尝试向我的数据添加图表。该数据是从 phpmyadmin 导入的。数据经过，我在它下面有表格。当我尝试添加数据时，出现错误，因为它将我的 php 转换为 [<br /> .

<script type='text/javascript'>
var ctx = document.getElementById('myChart').getContext('2d');

var myChart = new Chart(ctx, {
    type: 'line',
    data: {
        labels: [<?php echo $Timers; ?>],
        datasets: [{
            label: 'Time',
            data: [<?php echo $Wheights; ?>],

PHP

while ($stelling = mysqli_fetch_array($records1)){

            $Timer = date('M, Y', strtotime($stelling['Timer']));
            $Wheight = $stelling['Wheight'];
            $Title = $stelling['Title'];

$Timers = '';
$Wheights = '';
$Titles = '';

$Timers = $Timers.'"'.$Timer.'",';
$Wheights = $Wheights.$Wheight.',';
$Titles = $Titles.$Title.',';

$Timers = trim($Timers, ",");
$Wheights = trim($Wheights, ",");
$Titles = trim($Titles, ",");



}include ("script/graph.php");
    }

这是错误:

var myChart = new Chart(ctx, {
    type: 'line',
    data: {
        labels: [<br />
< etc

我希望数据通过chart.js形成一个图表

Answer 1

您的 javascript 代码似乎存在问题。它没有正确地将 php 数组转换为 javascript。

试试这个:

<script type='text/javascript'>
var ctx = document.getElementById('myChart').getContext('2d');
var labels = '<?php echo json_encode($Timers); ?>';

var myChart = new Chart(ctx, {
    type: 'line',
    data: {
        labels: labels,
        datasets: [{
            label: 'Time',
            data: [<?php echo $Wheights; ?>],