OnSuccess/OnFailure properties as part of the rule - Security Issue

There are 2 properties like Onsuccess and Onfailure property which can be a javascript function delegate and it is part of the rule right?

onSuccess: function(event,almanac) { console.log('hello success') },
onFailure : function(event,almanac) { alert('hello failed') }

Is it safe to store this as part of the rule in the database. Because the rule comes from the server to the client this script can be tampered by the hacker and we would end up executing a malicious script. Is that right?

Or Is my understanding wrong? Please confirm

首先跟踪函数属性 onSuccess 和 onFailure 如何进入规则、从服务器传到客户端并被执行。检查规则存储和客户端执行的入口点，以确定安全边界；完成的标准是记录这种行为是否安全，以及适用哪些处理指导。

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