浏览器兼容性 instancemessagefileNamelineNumberinstancefoofooObjectinstanceprototypeErrorcaptureStackTraceErrorinstanceCustomErrorinstanceObjectprototypeprototypeObjectCustomErrorErrorCustomError.prototype.name="CustomError";try{thrownewCustomError("baz","bazMessage");}catch(e){console.error(e.name);// CustomError...
https://www.valentinog.com/blog/event/#how-does-event-driven-applies-to-javascript-in-the-browser (Node.js 会在未来版本中支持 EventTarget)。 DOM 事件的错误处理机制遵循异步 WebAPI 的模式。 考虑以下示例: const button = document.querySelector("button"); button.addEventListener("click", function(...
参考MDN https://developer.mozilla.org/en-US/docs/Web/JavaScript 错误类型 Error: 所有错误的父类型 最常见:ReferenceError TypeError 错误处理 捕获错误:try ... catch 抛出错误: throw error 错误对象 */ /* 1.常见内置错误 */ //ReferenceError: 引用变量不存在 console.log(a) //ReferenceError: a is ...
InternalError 对象表示出现在JavaScript引擎内部的错误。 例如: "InternalError: too much recursion"(内部错误:递归过深)。 当JavaScript引擎出现内部错误时将会抛出InternalError。 示例场景通常为某些成分过大,例如: "too many switch cases"(过多case子句); "too many parentheses in regular expression"(正则表达式中...
Exceptional Exception Handling in JavaScriptMDN资料 Anything that can go wrong, will go wrong. Murphy’s law is even applicable to software development. For non-trivial programs, it’s not a matter ofif, butwhensomething will go wrong. Standards non-compliance, unsupported features, and browser ...
默认情况下,message属性为空字符串,但可以通过将消息作为第一个参数传递给Error构造函数来覆盖实例的此行为。 示例 抛出自定义错误 js conste=newError("无法解析输入");// e.message 是“无法解析输入”throwe; 规范 Specification ECMAScript® 2026 Language Specification ...
InternalError(非标准):表示出现在JavaScript引擎内部的错误 当JavaScript引擎出现内部错误时将会抛出InternalError。 示例场景通常为某些成分过大,例如: "too many switch cases"(过多case子句); "too many parentheses in regular expression"(正则表达式中括号过多); ...
For a complete list seethis page on MDN. What is an exception? Most developers think that error and exceptions are the same thing. In reality, anerror object becomes an exception only when it's thrown. To throw an exception in JavaScript we usethrow, followed by the error object: ...
JavaScript Object Reference URIError 此頁面的貢獻者: fscholz, Sebastianz, Mingun, arai, Sheppy, Potappo, Sevenspade 最近更新: fscholz, Jan 4, 2016, 6:19:12 AM 詳見 Standard built-in objects Error Properties Error.prototype Error.prototype.columnNumber Error.prototype.fileName Error.prototy...
错误信息准确:在抛出错误时,尽量提供准确和有意义的错误描述信息,方便调试和错误追踪。 错误处理层级:在多层嵌套的代码中,确保错误的处理在合适的层级进行,以便正确地捕获和处理错误。 7. 参考资料 MDN Web Docs - Erroropen in new window JavaScript Error Handling: A Beginner's Guide...