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?
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
我会这样做:
function Hello() {
console.trace();
}
其他回答
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
你可以得到完整的堆栈跟踪:
arguments.callee.caller
arguments.callee.caller.caller
arguments.callee.caller.caller.caller
直到调用者为空。
注意:它会导致递归函数的无限循环。
使用严格模式开/关(JavaScript & TypeScript),如果(!)调用者存在,你可以尝试这个
console.log(`caller:${(new Error()).stack?.split('\n')[2].trim().split(' ')[1]}`)
只是想让你知道,在PhoneGap/Android上,这个名字似乎不工作。但是arguments.callee.caller.toString()可以做到这一点。
试着访问这个:
arguments.callee.caller.name