KeyboardEvent ctrlKey 属性

DOM ɗanarorin KeyboardEvent

定义和用法

ctrlKey 属性返回一个布尔值，该值指示在触发键事件时是否按下了 "CTRL" 键。

注释：该属性只读。

实例

确定按下键盘按键时是否按下了 "CTRL" 键：

var x = document.getElementById("demo");
if (event.ctrlKey) {
  x.innerHTML = "The CTRL key was pressed!";
} else {
  x.innerHTML = "The CTRL key was NOT pressed!";
}

亲自试一试

语法

event.ctrlKey

技术细节

返回值：

布尔值，指示发生按键事件时是否按下了 "CTRL" 键。

可能的值：

  • true - a ya CTRL
  • false - ǹjẹ̀gbọ̀n CTRL
DOM 版本： DOM Level 2 Events

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