keycode

Javascript: different keyCodes on different browsers?

一曲冷凌霜 提交于 2019-11-28 06:55:24
So I've seen some forums posts about different browsers reporting differenct keyCodes, but everyone seems so avoid the "why?". I was trying to capture the colon (:) keyCode and realized that Firefox reports back e.keyCode 56. While Chrome reports back 186 (I think that's what it was). Is there a univeral way of getting the right keyCode across all browsers? And why are they different if they are the same keys? I would be more curious as to whether there is a international way of getting the same key press. Thanks. See http://unixpapa.com/js/key.html for an explanation why they have different

Differentiating text keycode from control keycode in Android KeyEvent

耗尽温柔 提交于 2019-11-28 06:48:03
问题 There are 284 KeyEvent key codes. Some of them represent Unicode characters (like KEYCODE_A and KEYCODE_1 ), while others represent control characters (like KEYCODE_DEL ). I am making a custom view that handles keyboard input. It gets most of its input from an Input Connection, but sometimes keyboards send key codes (normall associated with hard keyboard input). I need to handle that, too. Do I need to exhaustively handle every control key code and then convert the rest to text (with (char)

How to detect that Ctrl+R was pressed?

只愿长相守 提交于 2019-11-28 06:20:30
I'm coding a function in jquery that executes if Ctrl + R is pressed but I can't seem to find out what the left and right ctrl keycodes are... Can someone please help? UPDATE ///this works $(document).keydown(function(e){ if(e.keyCode==17){alert("control was pressed")}; }); Next Question-- How do I link control key press and another key press to execute a function? if(e.keyCode==17){llCtrlPress=1}; if(e.keyCode==97 && llCtrlPress=1){DO SOMETHING} ???????????? That seems like it would work fine but then how do I set llCtrlpress back to '0' on keyup? Alan Jackson You have to use the keydown

js code大全

ⅰ亾dé卋堺 提交于 2019-11-28 01:53:47
keycode 8 = BackSpace BackSpace keycode 9 = Tab Tab keycode 12 = Clear keycode 13 = Enter keycode 16 = Shift_L keycode 17 = Control_L keycode 18 = Alt_L keycode 19 = Pause keycode 20 = Caps_Lock keycode 27 = Escape Escape keycode 32 = space space keycode 33 = Prior keycode 34 = Next keycode 35 = End keycode 36 = Home keycode 37 = Left keycode 38 = Up keycode 39 = Right keycode 40 = Down keycode 41 = Select keycode 42 = Print keycode 43 = Execute keycode 45 = Insert keycode 46 = Delete keycode 47 = Help keycode 48 = 0 equal braceright keycode 49 = 1 exclam onesuperior keycode 50 = 2 quotedbl

How to catch event.keyCode and change it to another keyCode?

别等时光非礼了梦想. 提交于 2019-11-28 01:04:53
I have checked other questions here at SO, however they do not answer my question. I want to simply catch certain keyCode and replace it with another. I am working with characters, not white spaces, and I do not need to loose focus or the like. Below is my code. But you can replace those keyCodes with your (eg. when capital "A" is pressed, it should replace with zero 0, etc.). The idea is to replace the keyCode. phrase.keypress(function(event) { if (event.shiftKey) { switch (event.keyCode) { // Cyrillic capitalized "Н" was pressed case 1053: event.keyCode = 1187; event.charCode = 1187; event

How to obtain the keycodes in Python

不打扰是莪最后的温柔 提交于 2019-11-27 21:37:35
I have to know what key is pressed, but not need the code of the Character, i want to know when someone press the 'A' key even if the key obtained is 'a' or 'A', and so with all other keys. I can't use PyGame or any other library (including Tkinter). Only Python Standard Library. And this have to be done in a terminal, not a graphical interface. NOT NEED THE CHARACTER CODE. I NEED TO KNOW THE KEY CODE. Ex: ord('a') != ord('A') # 97 != 65 someFunction('a') == someFunction('A') # a_code == A_code myroslav See tty standard module. It allows switching from default line-oriented (cooked) mode into

js 禁止某些键盘事件

孤者浪人 提交于 2019-11-27 21:30:38
document.addEventListener('keydown', function(event){ return !( 112 == event.keyCode || //F1 123 == event.keyCode || //F12 event.ctrlKey && 82 == event.keyCode || //ctrl + R event.ctrlKey && 78 == event.keyCode || //ctrl + N event.shiftKey && 121 == event.keyCode || //shift + F10 event.altKey && 115 == event.keyCode || //alt + F4 "A" == event.srcElement.tagName && event.shiftKey //shift + 点击a标签 ) || (event.returnValue = false) }); 来源: https://blog.csdn.net/weixin_42265852/article/details/99736202

JQuery allow only two numbers after decimal point

若如初见. 提交于 2019-11-27 18:10:44
I found the following JQuery function here which prevents a user from entering anything that's not a number or a single decimal. The function works well but I'd like to improve it to prevent the user from entering 3 or more decimal places i.e. disallow 99.999 and allow 99.99. Any ideas? function checkForInvalidCharacters(event, inputBox){ if ((event.which != 46 || inputBox.val().indexOf('.') != -1) && (event.which < 48 || event.which > 57)) { event.preventDefault(); } }; The logic is every time a user entering a number you have to check two things. Has the user entered decimal point? Are the

How can I translate Linux keycodes from /dev/input/event* to ASCII in Perl?

谁说我不能喝 提交于 2019-11-27 16:56:55
问题 I'm writing a Perl script that reads data from the infamous /dev/input/event* and I didn't find a way to translate the key codes generated by the kernel into ASCII. I'm talking about the linux key codes in this table here and I can't seem to find something that would help me translate them without hardcoding an array into the script. Am I missing something? I'd like to skip the array part because it doesn't seem to be a good practice, so any idea? :) 回答1: It's basically a map problem. You

jquery keypress event object keyCode for firefox problem?

心不动则不痛 提交于 2019-11-27 16:03:17
jQuery keypress event for FireFox gives encrypted keyCode property for event object after String.fromCharCode(e.keyCode) conversion but works perfect in Chrome. Following is the javascript code: <!-- #booter and #text are ids of html element textarea --> <script type="text/javascript"> $(function(){ $('#booter').keypress(function(e){ var input = $(this).val() + String.fromCharCode(e.keyCode); $('#text').focus().val(input); return false; }); }); </script> You should use e.charCode in Firefox. $("#booter").keypress(function(e){ var code = e.charCode || e.keyCode; var input = $(this).val() +