enter

Trap the enter key, but not when choosing the browser's autocomplete suggestion

ⅰ亾dé卋堺 提交于 2019-11-29 03:57:09
I have some textboxes on a page and I want to click a link when the user presses enter in any of them. I can easily trap the enter button using javascript (by looking for 13 in event.keyCode and event.which ), but I hit an issue when the browser's autocomplete feature kicks in and suggests what the user might want to type. We're finding the users often press enter to accept the browser's suggestion, rather than tab. This confuses the users as the link is clicked immediately, whereas they still intended to enter text into some of the other fields. I know it would be better to use a form and a

Javascript submit textbox on ENTER [duplicate]

℡╲_俬逩灬. 提交于 2019-11-29 01:33:00
Possible Duplicate: Bind textbox to 'enter' key I've made ajax / jquery chat and there is no form in textbox for message , so i can't submit that message with ENTER on keyboard.Is there any way to submit that value from textbox with javascript ? Thanks. document.getElementById("id_of_your_textbox").addEventListener("keydown", function(e) { if (!e) { var e = window.event; } e.preventDefault(); // sometimes useful // Enter is pressed if (e.keyCode == 13) { submitFunction(); } }, false); nachito $('#textboxId').keydown(function (event) { var keypressed = event.keyCode || event.which; if

Java Editable JCombobox Keylistener event for Enter key

孤者浪人 提交于 2019-11-28 12:26:59
I have editable JCombobox and I added keylistener for combobox editor component. When user press 'Enter key' and if there is no text on the editable combobox I need to display message box using JOptinoPane. I have done necessary code in keyrelease event and it displays message as expected. Problem is, when we get message box and if user press enter key on 'OK' button of JOptionPane, combobox editor keyevent fires again. Because of this, when user press Enter key on message box, JoptionPane displays continuously. Any idea how to solve this? Note that I can't use Action listener for this. Please

testdisk修复磁盘文件

[亡魂溺海] 提交于 2019-11-28 11:23:04
使用testdisk,分析之后,使用;P ,list文件,然后使用如下方法恢复文件 Use Right to change directory, h to hide Alternate Data Stream q to quit, : to select the current file, a to select all files C to copy the selected files, c to copy the current file 数据恢复利器-Testdisk - - 数据恢复利器-Testdisk 今天我要给大家介绍的主角是 Testdisk 首先, Testdisk 是一个强大的免费的跨平台的数据恢复工具,根据它的 官网 上的简介,这款软件主要被设计用于恢复丢失的分区以及修复那些由于人为或者病毒等原因导致分区表错误而无法启动系统的问题。 除此之外,Testdisk更多的特性大家可以参考官方列出的功能列表: TestDisk can Fix partition table, recover deleted partition Recover FAT32 boot sector from its backup Rebuild FAT12/FAT16/FAT32 boot sector Fix FAT tables Rebuild NTFS boot sector

vue如何监听键盘事件中的按键?

余生长醉 提交于 2019-11-28 09:44:44
原文地址 背景 在一些搜索框中,我们往往需要监听键盘的按下( onkeydown )或抬起( onkeyup )事件以进行一些操作。在原生js或者jQuery中,我们需要判断 e.keyCode 的值来获取用户所按的键。这样就存在一个问题:我们必须知道某个按键的 keyCode 值才能完成匹配,使用起来十分不便。 keyCode 实际键值 48到57 0到9 65到90 a到z(A到Z) 112到135 F1到F24 8 BackSpace(退格) 9 Tab 13 Enter(回车) 20 Caps_Lock(大写锁定) 32 Space(空格键) 37 Left(左箭头) 38 Up(上箭头) 39 Right(右箭头) 40 Down(下箭头) 参考: JavaScript 获取键盘事件(键盘某个按键被按下) 方案 在Vue中,已经为常用的按键设置了别名,这样我们就无需再去匹配 keyCode ,直接使用别名就能监听按键的事件。 <input @keyup.enter="function"> 别名 实际键值 .delete delete(删除)/BackSpace(退格) .tab Tab .enter Enter(回车) .esc Esc(退出) .space Space(空格键) .left Left(左箭头) .up Up(上箭头) .right Right(右箭头)

使用with自动关闭资源

╄→尐↘猪︶ㄣ 提交于 2019-11-28 08:13:02
对文件操作完成后应该立即关闭它们,一种比较古老的方法是 try_finally块 ,但Python提供了一种更为简单的解决方案: with语句 。 with语句的语法为: with 表达式 [as 目标]: 代码块 with语句支持嵌套,支持多个with子句,它们两者可以相互转换。 # 多个with子句 with expr1 as e1 , expr2 as e2 : pass # 嵌套形式 with expr1 as e1 : with expr2 as e2 : pass with语句可以在代码块执行完毕后还原进入代码块时的现场。包含有with语句的代码块的执行过程如下: 计算表达式的值,返回一个上下文管理器对象。 加载上下文管理器对象的__exit__()方法以备后用。 调用上下文管理器对象的__enter__()方法。 如果with语句中设置了目标对象,则将__enter__()方法的返回值赋值给目标对象。 执行with中的代码块。 如果代码正常结束,调用上下文管理器对象的__exit__()方法,其返回值直接忽略。 如果代码执行过程中发生异常,调用上下文管理器对象的__exit__()方法,并将异常类型、值及trackback信息作为参数传递给__exit__()方法。如果__exit__()返回值为false,则异常会被重新抛出;如果其返回值为true,异常被挂起

c++ :cin的用法

一笑奈何 提交于 2019-11-28 06:20:44
1.cin介绍 cin 是 C++ 的标准输入流对象,cin 主要用于从键盘输入读取数据,其是从缓冲区读取数据,缓冲区为空时,cin等待数据的写入;缓冲区有数据时,cin函数取读取数据。 1-1.cin的几种常见读取方法 cin>>,cin.get(),cin.getline()。 2.cin常见用法详解 2.1. cin>> (1). cin>>用于连续从键盘读取数据,遇到空格,Tab,Enter会结束输入。cin是智能指针,若缓冲区开始的字符为分隔符时,cin>>忽略并清除这些,直到遇到非分隔符为止;字符读取结束后,缓冲区里的分隔字符留在缓冲区内,cin>>不会对其作出处理。 例子1: #include <iostream> #include <string> using namespace std; int main(void) { int a,b; string c; cout <<"输入:"; cin>>a>>b>>c; cout <<"输出:"<<a<<" "<<b<<" "<<c<<endl; return 0; } 输入:1【Enter】2【Enter】hello【Enter】 结果: 输出:1 2 hello 例2: #include <string> #include <iostream> using namespace std; int main() {

Enter triggers button click

醉酒当歌 提交于 2019-11-28 02:59:54
I have a page with two buttons. One is a <button> element and the other is a <input type="submit"> . The buttons appear on the page in that order. If I'm in a text field anywhere in the form and press <Enter> , the button element's click event is triggered. I assume that's because the button element sits first. I can't find anything that looks like a reliable way of setting the default button, nor do I necessarily want to at this point. In the absence of anything better, I've captured a keypress anywhere on the form and, if it was the <Enter> key that was pressed, I'm just negating it: $('form

In IE8 enter key in a form does not work

别来无恙 提交于 2019-11-27 23:03:48
问题 I have a problem that in IE8 the enter does not work to submit a form. I have generated a test page to expose this problem. It seems that displaying the form in the onLoad function disables results that the enter button does not trigger a submit anymore. Is this a bug in IE8 or is it some security issue? The code to reproduce this is: onload = function() { document.getElementById('test').style.display = 'block'; } #test { display: none; } <form id="test" method="get" action="javascript:alert(

Submit form on Enter key with javascript

本秂侑毒 提交于 2019-11-27 21:19:38
I'm not sure what I am doing wrong here. I want the enter key to work as well as clicking the button. <form action="" method="get" class="priceOptionForm" name="priceOptionForm"> <input name="paypal_email" type="text" value="whatever" id="email"></label> <a href="javascript:void(0);" class="bluebtn" id="profile_price" style="width:60px;margin-top:5px;">Save all</a> </form> Try this: document.getElementById('email').onkeydown = function(e){ if(e.keyCode == 13){ // submit } }; Please use below code snippet...It should be added into script block <script> document.onkeydown=function(evt){ var