从字符串调用函数的正确方法是什么？

Question

Is it okay to do the following: 可以执行以下操作吗？

// Response from an API as a string, that contains a function to call.
const stringFunc = 'myFunc({"Status":200,"Message":"This is a message"})';

function myFunc(obj) {
  console.log(obj);
}

function callBack(stringFn) {
  return Function.prototype.call(stringFn);
}

callBack(stringFunc);

Console logs: 控制台日志：

{"Status":200,"Message":"This is a message"}

It seems to work just fine, but wanted to know if this was the correct way to go about this at all? 似乎工作正常，但想知道这是否是解决此问题的正确方法？ Are there any better methods or unforeseen implications? 有更好的方法或无法预料的影响吗？

Thanks 谢谢

Answer 1

Use eval method. 使用评估方法。

 <!DOCTYPE html> <html> <body> <script> const stringFunc = 'myFunc({"Status":200,"Message":"This is a message"})'; function myFunc(obj) { console.log(obj); } function callBack(stringFn) { return Function.prototype.call(stringFn); } eval(stringFunc); </script> </body> </html>

Answer 2

As an alternative to eval you can use the Function constructor: 作为eval的替代方法，您可以使用Function构造函数：

const stringFunc = 'myFunc({"Status":200,"Message":"This is a message"})';

function myFunc(obj) {
  console.log(obj);
}

const payloadFunc = new Function(stringFunc);
payloadFunc() //logs the object

从字符串调用函数的正确方法是什么？

问题描述

2 个解决方案

解决方案1
1 2017-01-12 13:20:38

解决方案2
1 2017-01-12 13:37:51

从字符串调用函数的正确方法是什么？

问题描述

2 个解决方案

解决方案1 1 2017-01-12 13:20:38

解决方案2 1 2017-01-12 13:37:51

解决方案1
1 2017-01-12 13:20:38

解决方案2
1 2017-01-12 13:37:51