How to convert php array to js array: 1. Convert $data into json encoding, and then use eval to convert the json format into js array; 2. Directly use the json encoded array in php.
The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer
Convert php array to js array
Method 1:
In the controller:
public function index()
{
$sql=Db::name('shuju')
->field('name')
->select();
foreach($sql as $val)
{
$arr[]=$val['name'];
}
$this->assign('data',$arr);
return $this->fetch('index');
}Look at it What kind of array is $arr: 
In the view:
<html> <head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
<script src="__STATIC__/js/jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="__STATIC__/js/layer/layer.js"></script></script> </head> <body><script type="text/javascript">var arr = eval(<?php echo json_encode($data);?>);console.log(arr);</script> </body> </html>First convert $data into json encoding, and then use eval to convert the json format into js array
<script type="text/javascript">var arr = eval(<?php echo json_encode($data);?>);console.log(arr);</script>
Method 2:
<script type="text/javascript">var arr = <?php echo json_encode($data);?>;console.log(arr);</script>
Use directly in php json encoded array
[Recommended learning: PHP video tutorial]
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