示例代码
const ke = new KeyboardEvent('keydown', {
bubbles: true, cancelable: true, keyCode: 13
});
document.body.dispatchEvent(ke);
扩展
键盘键值对照表
上面的 keyCode 对应 十进制值
| 常数名称 | 十六进制值 | 十进制值 | 对应按键 |
|---|---|---|---|
| VK_LBUTTON | 01 | 1 | 鼠标的左键 |
| VK_RBUTTON | 02 | 2 | 鼠标的右键 |
| VK-CANCEL | 03 | 3 | Ctrl+Break(通常不需要处理) |
| VK_MBUTTON | 04 | 4 | 鼠标的中键（三按键鼠标) |
| VK_BACK | 08 | 8 | Backspace键 |
| VK_TAB | 09 | 9 | Tab键 |
| VK_CLEAR | 0C | 12 | Clear键（Num Lock关闭时的数字键盘5） |
| VK_RETURN | 0D | 13 | Enter键 |
| VK_SHIFT | 10 | 16 | Shift键 |
| VK_CONTROL | 11 | 17 | Ctrl键 |
| VK_MENU | 12 | 18 | Alt键 |
| VK_PAUSE | 13 | 19 | Pause键 |
| VK_CAPITAL | 14 | 20 | Caps Lock键 |
| VK_ESCAPE | 1B | 27 | Ese键 |
| VK_SPACE | 20 | 32 | Spacebar键 |
| VK_PRIOR | 21 | 33 | Page Up键 |
| VK_NEXT | 22 | 34 | Page Domw键 |
| VK_END | 23 | 35 | End键 |
| VK_HOME | 24 | 36 | Home键 |
| VK_LEFT | 25 | 37 | LEFT ARROW 键(←) |
| VK_UP | 26 | 38 | UP ARROW键(↑) |
| VK_RIGHT | 27 | 39 | RIGHT ARROW键(→) |
| VK_DOWN | 28 | 40 | DOWN ARROW键(↓) |
| VK_Select | 29 | 41 | Select键 |
| VK_PRINT | 2A | 42 | Print键 |
| VK_EXECUTE | 2B | 43 | EXECUTE键 |
| VK_SNAPSHOT | 2C | 44 | Print Screen键（抓屏） |
| VK_Insert | 2D | 45 | Ins键(Num Lock关闭时的数字键盘0) |
| VK_Delete | 2E | 46 | Del键(Num Lock关闭时的数字键盘.) |
| VK_HELP | 2F | 47 | Help键 |
| VK_0 | 30 | 48 | 0键 |
| VK_1 | 31 | 49 | 1键 |
| VK_2 | 32 | 50 | 2键 |
| VK_3 | 33 | 51 | 3键 |
| VK_4 | 34 | 52 | 4键 |
| VK_5 | 35 | 53 | 5键 |
| VK_6 | 36 | 54 | 6键 |
| VK_7 | 37 | 55 | 7键 |
| VK_8 | 38 | 56 | 8键 |
| VK_9 | 39 | 57 | 9键 |
| VK_A | 41 | 65 | A键 |
| VK_B | 42 | 66 | B键 |
| VK_C | 43 | 67 | C键 |
| VK_D | 44 | 68 | D键 |
| VK_E | 45 | 69 | E键 |
| VK_F | 46 | 70 | F键 |
| VK_G | 47 | 71 | G键 |
| VK_H | 48 | 72 | H键 |
| VK_I | 49 | 73 | I键 |
| VK_J | 4A | 74 | J键 |
| VK_K | 4B | 75 | K键 |
| VK_L | 4C | 76 | L键 |
| VK_M | 4D | 77 | M键 |
| VK_N | 4E | 78 | N键 |
| VK_O | 4F | 79 | O键 |
| VK_P | 50 | 80 | P键 |
| VK_Q | 51 | 81 | Q键 |
| VK_R | 52 | 82 | R键 |
| VK_S | 53 | 83 | S键 |
| VK_T | 54 | 84 | T键 |
| VK_U | 55 | 85 | U键 |
| VK_V | 56 | 86 | V键 |
| VK_W | 57 | 87 | W键 |
| VK_X | 58 | 88 | X键 |
| VK_Y | 59 | 89 | Y键 |
| VK_Z | 5A | 90 | Z键 |
| VK_NUMPAD0 | 60 | 96 | 数字键0键 |
| VK_NUMPAD1 | 61 | 97 | 数字键1键 |
| VK_NUMPAD2 | 62 | 98 | 数字键2键 |
| VK_NUMPAD3 | 62 | 99 | 数字键3键 |
| VK_NUMPAD4 | 64 | 100 | 数字键4键 |
| VK_NUMPAD5 | 65 | 101 | 数字键5键 |
| VK_NUMPAD6 | 66 | 102 | 数字键6键 |
| VK_NUMPAD7 | 67 | 103 | 数字键7键 |
| VK_NUMPAD8 | 68 | 104 | 数字键8键 |
| VK_NUMPAD9 | 69 | 105 | 数字键9键 |
| VK_MULTIPLY | 6A | 106 | 数字键盘上的*键 |
| VK_ADD | 6B | 107 | 数字键盘上的+键 |
| VK_SEPARATOR | 6C | 108 | Separator键 |
| VK_SUBTRACT | 6D | 109 | 数字键盘上的-键 |
| VK_DECIMAL | 6E | 110 | 数字键盘上的.键 |
| VK_DIVIDE | 6F | 111 | 数字键盘上的/键 |
| VK_F1 | 70 | 112 | F1键 |
| VK_F2 | 71 | 113 | F2键 |
| VK_F3 | 72 | 114 | F3键 |
| VK_F4 | 73 | 115 | F4键 |
| VK_F5 | 74 | 116 | F5键 |
| VK_F6 | 75 | 117 | F6键 |
| VK_F7 | 76 | 118 | F7键 |
| VK_F8 | 77 | 119 | F8键 |
| VK_F9 | 78 | 120 | F9键 |
| VK_F10 | 79 | 121 | F10键 |
| VK_F11 | 7A | 122 | F11键 |
| VK_F12 | 7B | 123 | F12键 |
| VK_NUMLOCK | 90 | 144 | Num Lock 键 |
| VK_SCROLL | 91 | 145 | Scroll Lock键 |
| 上面没有提到的：（都在大键盘） | |||
| VK_LWIN | 91 | 左win键 | |
| VK_RWIN | 92 | 右win键 | |
| VK_APPS | 93 | 右Ctrl左边键，点击相当于点击鼠标右键，会弹出快捷菜单 | |
| 186 | ;(分号) | ||
| 187 | =键 | ||
| 188 | ,键(逗号) | ||
| 189 | -键(减号) | ||
| 190 | .键(句号) | ||
| 191 | /键 | ||
| 192 | `键(Esc下面) | ||
| 219 | [键 | ||
| 220 | \键 | ||
| 221 | ]键 | ||
| 222 | ‘键(引号) |