الرجوع الي الدرس
هذة المادة العلميه متاحه فقط باللغات الأتيه: English, Français, Italiano, 日本語, Русский, Türkçe, 简体中文. من فضلك, ساعدنا قم بالترجمه إلى عربي.

Extended hotkeys

الأهمية: 5

Create a function runOnKeys(func, code1, code2, ... code_n) that runs func on simultaneous pressing of keys with codes code1, code2, …, code_n.

For instance, the code below shows alert when "Q" and "W" are pressed together (in any language, with or without CapsLock)

runOnKeys(
  () => alert("Hello!"),
  "KeyQ",
  "KeyW"
);

عرض توضيحي في نافذة جديدة

We should use two handlers: document.onkeydown and document.onkeyup.

Let’s create a set pressed = new Set() to keep currently pressed keys.

The first handler adds to it, while the second one removes from it. Every time on keydown we check if we have enough keys pressed, and run the function if it is so.

افتح الحل في sandbox.