如何模拟按下END键

Question

我有一个从aspx.vb文件调用的javascript函数：

using ScriptManager.RegisterStartupScript(Me, Page.GetType, "Script", "pressKey();", True)

并且我需要pressKey函数来模拟按下 END 键，就像用户在键盘上按下它一样。

Answer 1

“结束”键的charCode为35。CSS技巧有很多字符代码：https://css-tricks.com/snippets/javascript/javascript-keycodes/

这是Vanilla JS解决方案：

var keyboardEvent = document.createEvent("KeyboardEvent");
var initMethod = typeof keyboardEvent.initKeyboardEvent !== 'undefined' ? 
"initKeyboardEvent" : "initKeyEvent";


keyboardEvent[initMethod](
               "keydown", // event type : keydown, keyup, keypress
                true, // bubbles
                true, // cancelable
                window, // viewArg: should be window
                false, // ctrlKeyArg
                false, // altKeyArg
                false, // shiftKeyArg
                false, // metaKeyArg
                35, // keyCodeArg : unsigned long the virtual key code, else 0
                0 // charCodeArgs : unsigned long the Unicode character associated with the depressed key, else 0
);
document.dispatchEvent(keyboardEvent);