如何在JavaScript中找到调用者函数?

function main()
{
   Hello();
}

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

有办法找到调用堆栈吗?

当前回答

只需控制台日志错误堆栈。这样你就可以知道你是如何被召唤的

Const hello = () => { console.log(新的错误('I was called').stack) ｝ Const sello = () => { 你好() ｝你可以()

2018-03-14 09:49:23

其他回答

试试下面的代码:

function getStackTrace(){
  var f = arguments.callee;
  var ret = [];
  var item = {};
  var iter = 0;

  while ( f = f.caller ){
      // Initialize
    item = {
      name: f.name || null,
      args: [], // Empty array = no arguments passed
      callback: f
    };

      // Function arguments
    if ( f.arguments ){
      for ( iter = 0; iter<f.arguments.length; iter++ ){
        item.args[iter] = f.arguments[iter];
      }
    } else {
      item.args = null; // null = argument listing not supported
    }

    ret.push( item );
  }
  return ret;
}

在火狐21和Chromium-25里为我工作过。

2013-06-22 20:33:26

我知道你提到了“在Javascript中”，但如果目的是调试，我认为使用浏览器的开发工具更容易。这是它在Chrome中的样子: 只需将调试器放置在您想要研究堆栈的位置。

2015-02-03 00:28:59

我认为下面的代码段可能会有帮助:

window.fnPureLog = function(sStatement, anyVariable) {
    if (arguments.length < 1) { 
        throw new Error('Arguments sStatement and anyVariable are expected'); 
    }
    if (typeof sStatement !== 'string') { 
        throw new Error('The type of sStatement is not match, please use string');
    }
    var oCallStackTrack = new Error();
    console.log(oCallStackTrack.stack.replace('Error', 'Call Stack:'), '\n' + sStatement + ':', anyVariable);
}

执行以下代码:

window.fnPureLog = function(sStatement, anyVariable) {
    if (arguments.length < 1) { 
        throw new Error('Arguments sStatement and anyVariable are expected'); 
    }
    if (typeof sStatement !== 'string') { 
        throw new Error('The type of sStatement is not match, please use string');
    }
    var oCallStackTrack = new Error();
    console.log(oCallStackTrack.stack.replace('Error', 'Call Stack:'), '\n' + sStatement + ':', anyVariable);
}

function fnBsnCallStack1() {
    fnPureLog('Stock Count', 100)
}

function fnBsnCallStack2() {
    fnBsnCallStack1()
}

fnBsnCallStack2();

日志是这样的:

Call Stack:
    at window.fnPureLog (<anonymous>:8:27)
    at fnBsnCallStack1 (<anonymous>:13:5)
    at fnBsnCallStack2 (<anonymous>:17:5)
    at <anonymous>:20:1 
Stock Count: 100

2017-04-28 07:27:45