⛔octal literals not allowed in strict mode❗️

🚧 under construction

JS ⟩ error ⟩ SyntaxError ⟩ delete of an unqualified identifier in strict mode

SyntaxError: octal literals not allowed in strict mode❗

💈範例

• replit：octal literals not allowed in strict mode

let x = 010;    // ❗ octal literal
let y = 0x10;   // ⭐ hexadecimal literal

//  mode:    sloppy      strict
// -------------------------------------
x,        // ✅ 8       ⛔ SyntaxError
y,        // ✅ 16      ✅ 16

// ⛔ SyntaxError: Octal literals are not allowed in strict mode.

👥 相關

• literal

• strict mode

• always use strict mode

📗 參考

• itHome ⟩ 你不可不知的 JavaScript 二三事 ⟩

  • #Day12：看 Strict Mode 如何施展「還我漂亮拳」(1)

📘 手冊

🚧

• octal literal