[英]increasing php variable in javascript loop
Im trying to create a display of charts using chartJS that are dynamic in both the number of charts displayed and its contents. 我试图使用chartJS创建图表显示,这些图表在显示的图表数量及其内容中都是动态的。 I am stuck as to how to iterate through the result set in php while looping through the creation of charts in javascript.
关于如何在javascript中循环创建图表循环遍历php中的结果集时,我陷入困境。 I know that Javascript is processed client side and php is processed server side.
我知道Javascript是处理客户端而php是处理服务器端。 I wrote this code to give you guys a general idea of what i am trying to do.
我写了这段代码,让大家对我想要做的事情有一个大概的了解。 Right now the counter does not increase and i end up with the same graphs, whatever data that comes first in the array.
现在计数器没有增加,我最终得到相同的图表,无论数据中的第一个数据是什么。 In a sense, i need some way of tracking the var i in javascript within php to access the contents in my result set.
从某种意义上说,我需要一些方法来跟踪php中javascript中的var i来访问我的结果集中的内容。
var charts = [];
<?php $counter = 0; ?>
for (var i = 0; i < <?php echo sizeOf($readingArray); ?>; i++) {
var ctx = document.getElementById(i);
charts[i] = new Chart(ctx, {
type: 'line',
data: {
datasets: [{
label: 'Actual Readings',
data: <?php echo json_encode($readingArray[$counter][4], JSON_NUMERIC_CHECK); ?>,
}, {
label: 'Threshold',
data: <?php echo json_encode($readingArray[$counter][5], JSON_NUMERIC_CHECK); ?>,
}],
labels: <?php echo json_encode($readingArray[$counter][3]);?>,
},
options: {
zoom: {
enabled: true,
mode: 'x',
},
pan: {
enabled: true,
mode: 'x',
},
},
});
<?php $counter++; ?>
}
You shout assign php variables to js variables and work with them. 你大喊将php变量分配给js变量并使用它们。 Something like this
像这样的东西
var data = '<?php echo json_encode($readingArray); ?>';
Then convert json string to object 然后将json字符串转换为对象
arrayOfObjects = JSON.parse(data)
After that iterate your data and print chart 之后迭代您的数据并打印图表
for (var key in arrayOfObjects) {
console.log(arrayOfObjects[key])
}
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