javascript - 如何找到JavaScript中的调用者函数？(How do you find out the caller function in JavaScript?)

Question

function main()
{
   Hello();
}

function Hello()
{
  // How do you find out the caller function is 'main'?
}

Is there a way to find out the call stack?

(有没有办法找出调用堆栈？)

  ask by Ray Lu translate from so

Answer 1

function Hello()
{
    alert("caller is " + Hello.caller);
}

Note that this feature is non-standard , from Function.caller :

(请注意，此功能是Function.caller 的非标准 Function.caller ：)

Non-standard

(非标)
This feature is non-standard and is not on a standards track.

(此功能是非标准的，不在标准轨道上。)

Do not use it on production sites facing the Web: it will not work for every user.

(请勿在面向Web的生产站点上使用它：它不适用于每个用户。)

There may also be large incompatibilities between implementations and the behavior may change in the future.

(实现之间也可能存在很大的不兼容性，并且将来的行为可能会更改。)

---

The following is the old answer from 2008, which is no longer supported in modern Javascript:

(以下是2008年的旧答案，现代Javascript不再支持该答案：)

function Hello()
{
    alert("caller is " + arguments.callee.caller.toString());
}