onkeyup

问题 I have the beginnings of a 2d javascript game - at the moment the player can drive a triangle around the screen using the arrow keys. The problem is that sometimes the triangle will get stuck rotating in one direction or moving forward until the corresponding control key is pressed again and the onkeyup event is fired again. This usually happens when more than one control key is pressed at the same time. I can't work out why it's getting stuck in the first place unless the onkeyup events aren

问题 I have a basic form with a jquery validation bound to it. HTML : <form id="form-subscribe" method="post"> <div class="register_pane_content"> <label>Nom</label> <input placeholder="Votre nom" type="text" id="lastname" name="lastname" value="" class=""/> </div> <div class="register_pane_content"> <label>Prénom</label> <input placeholder="Votre prénom" type="text" id="firstname" name="firstname" value="" class=""/> </div> <div class="register_pane_content "> <label>E-mail</label> <input

问题 I've created a simple custom dialog that asks users to "Press a key". The purpose of this is so that I can map whatever key they press to a function in the app. Unfortunately, I can not figure out what is the correct interface to use to detect the key events. My class looks like this: public class ScancodeDialog extends Dialog implements OnKeyListener { public ScancodeDialog( Context context ) { super(context); setContentView( R.layout.scancode_dialog ); setTitle( "Key Listener" ); TextView

问题 I have this very basic code that I feel should be working but isn't. I have this form: <form id="search-box" action=""> <input id="search" type="text" placeholder="Search here.." onkeyup="search(this.value)"><!-- --><input id="submit" type="submit" value="Search"> </form> This form fires a JS search function. This search function contains: function search(input){ alert(input); } I have linked the JS file containing the function in the head of the html document: <script src="js/ajax.js"><

问题 Let suppose we have the following JQuery Code: $(document).bind('keyup', function(e) { arrows=((e.which)||(e.keyCode)); switch (arrows){ case 37: executeMyfunction(); break; } }); If a user holds down the left arrow key (37) the executeMyfunction() is repeatedly called. How can I prevent this from happening? I thought keyup would trigger only if key is released but its not working (thats why i use keyup, keydown does not work either). 回答1: I believe you have to unbind the event. I think it

问题 Note: My page has just textboxes. Nothing else. (nothing else => no other input types) $(":input[type='text']").keyup(function(event){ if(valid) { // take a focus to next input element, which is again a text type. } }); How can i jump the focus to next input element after key up. After Sarfraz Answer:- <div> <input type="text" maxlength="1" size="1" > <input type="text" maxlength="1" size="1" > <input type="text" maxlength="1" size="1" > // sarfraj -- here it crash Please check below for

问题 I use this script to search in a static page But i want this to search when i type in the text input and not when i click the button, i searchd and i found that any of this would work: onkeypress="this.submit();" onkeyup="this.submit();" onkeypress="document.forms["f1"].submit();" onkeyup="document.forms["f1"].submit();" but none of them works i used the same html with the script's <form id="f1" name="f1" action="javascript:void()" onsubmit="if(this.t1.value!=null && this.t1.value!='')parent

问题 When I have a DOM elements that are accessed many times in event handlers but not consecutively in code, is it benefical to store them in a variable? Examples- I have an event handler set for onresize - in the handler I get elements by ID's. As I know, this event is triggered multiple times when window is resized, so would it be better to hold a reference to these elements in global variables? I implement an AJAX based search. I have an input-text element and I've set handler for onkeyup

问题 I've just came across this interesting problem, or probably it's just me missing something very basic (hopefully). The problem is, that the keyup event is not firing for the return key in the WP8 browser, whereas all the other standard keys are firing this event up. I've tested this on the desktop, and IE10 is not having any issues with this, the event fires up nicely. Can anyone else confirm that on their WP8 devices the keyup event is not being triggered for the "return" key ? /using dojo

问题 This code piece must copy text from textarea text to textarea text_hidden , this code work without ckeditor onKeyUp="document.getElementById('text_hidden').value = this.value; but when ckeditor enabled onKeyUp="document.getElementById('text_hidden').value = this.value; not work. How to fix this ? <textarea name="text" id="text" rows="6" cols="80" onKeyUp="document.getElementById('text_hidden').value = this.value;" ></textarea></p> <textarea name="text_hidden" id="text_hidden" rows="6" cols=