从JSON编码的PHP传递JavaScript函数 [英] Passing a JavaScript function from JSON encoded PHP

问题描述

PHP - 这是由PHP函数返回的一个Highchart配置数组的一部分（这是json_encoded）

 ' plotOptions'=> array（$ b $'pie'=> array（
'allowPointSelect'=> TRUE，
'cursor'=>'pointer'，
'dataLabels'=>数组（
'enabled'=> TRUE，
'color'=>'＃000000'，
'connectorColor'=>'＃000000'，
'formatter '=>function（）{return'< b>'+ this.point.name +'< / b>：'+ this.percentage +'％'}
）
 ）
）
  

JavaScript - 从编码数据访问此信息

  container.highcharts（r.hc）; 
 // r.hc是包含
之上的高位图信息的数组> 
 
 
问题I 'm have is：
  Uncaught TypeError：Object function（）{return'< b> + this.point.name +'< / b>：'+ 
 this.percentage +'％'}没有方法'调用'
  
我如何改变它以便将它识别为函数？或者，这甚至有可能？
解决方案
从远程源执行javascript是一个糟糕的主意，因为您不能相信它。但是，如果您必须：
 
 
 json中包含的函数是一个字符串，因此您需要对其进行评估：
  pie.dataLabels.formatter = eval（'（'+ pie.dataLabels.formatter +'）'）; 
  
用于需要转换的对象的每种方法。
 
 $但是，正如开始所说，几乎肯定有一种解决方案，并不要求您以这种方式获取JavaScript。
 
PHP - This is part of a Highchart configuration array that is returned by a PHP function (which is json_encoded)
'plotOptions' => array(
    'pie' => array(
        'allowPointSelect'  => TRUE,
        'cursor'            => 'pointer',
        'dataLabels'        => array(
            'enabled'           => TRUE,
            'color'             => '#000000',
            'connectorColor'    => '#000000',
            'formatter'         => "function() { return '<b>'+ this.point.name +'</b>: '+ this.percentage +' %' }"
        )
    )
)
JavaScript - Accessing this information from the encoded data
container.highcharts(r.hc);
// r.hc is the array that contains the highchart information above
The problem I'm having is:
Uncaught TypeError: Object function() { return '<b>'+ this.point.name +'</b>: '+
this.percentage +' %' } has no method 'call'
How do I change this so it recognizes it as a function? Or is this even possible?
解决方案
Executing javascript from a remote source is a bad idea as you can't trust it. However, if you must:

The function included in the json is a string therefore you need to evaluate it:
 pie.dataLabels.formatter = eval('('+pie.dataLabels.formatter+')');
for each method of the object that needs to be converted.

However, as said at the start, there is almost certainly a solution that does not require you to fetch javascript in this way.

                        
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