const myObj = {};function c() {}function b() { // Here we will store the current stack trace into myObj Error.captureStackTrace(myObj); c();}function a() { b();}// First we will call these functionsa();// Now let's see what is the stack trace stored into my...
这时最好的做法是使用throw语句手动抛出一个Error对象。 throw new Error('出错了!'); 1. 上面语句新建一个Error对象,然后将这个对象抛出,整个程序就会中断在这个地方。 throw语句还可以抛出用户自定义的错误。 function UserError(message) { this.message = message || "默认信息"; = "UserError"; } UserErr...
//Now let's see what is the stack trace stored into myObj.stackconsole.log(myObj.stack);//This will print the following stack to the console://at b (repl:3:7) <-- Since it was called inside B, the B call is the last entry in the stack//at a (repl:2:1)//at repl:1:1 ...
Error.captureStackTrace 的第一个参数是 object, 第二个可选参数是一个 function.Error.captureStackTrace 会捕获堆栈信息, 并在第一个参数中创建 stack 属性来存储捕获到的堆栈信息. 如果提供了第二个参数, 该函数将作为堆栈调用的终点. 因此, 捕获到的堆栈信息将只显示该函数调用之前的信息. 用下面的两个demo来...
首先,让我们来看看当断言失败时抛出的AssertionError的构造函数: 复制 // `ssfi` standsfor"start stack function". Itisthe referencetothe// starting pointforremoving irrelevant framesfromthe stack tracefunctionAssertionError (message, _props, ssf) {var extend = exclude('name','message','stack','cons...
// Now let's see what is the stack trace stored into myObj.stack console.log(myObj.stack); // This will print the following stack to the console: // at a (repl:2:1) <-- As you can see here we only get frames before `b` was called ...
Now, we could make JavaScriptException a subclass of java.lang.Error instead of Exception? Or some other parent class, whatever is deemed to be the most appropriate. Nothing of this has to do with the reported error, though. Probably what we want is copy over the stack trace of the wrappe...
如果没有source map的话,你最后还可以求助于Chrome开发者工具Sources标签页中的格式化按钮(Pretty Print Button)。格式化按钮{}位于源代码文本区域的下方。格式化按钮对源代码进行美化,并改变行号,这使得调试代码更加方便,堆栈跟踪更加有效。 格式化按钮只有在不得已时才会使用。从某种意义上来说,丑代码就是难看,因为代码...
0:000> dx Debugger.State.Scripts.MyTraceUtils.Contents.CountLastErrorCalls() >>> GetLastError calls in this TTD recording: 18 显示堆栈中的帧 若要显示堆栈中的帧,请使用数组。 JavaScript 复制 function DisplayStack() { // Create an array of stack frames in the current thread const Frames...
Clicking theRawbutton displays the Error object in its raw form, with all the error properties (not just the stack trace). The raw output may be helpful for errors that contain additional properties. HTTP client libraries like Axios, Got, Undici, and others usually contain the HTTP response ...