backspace app

Found today in IE browser, when using the readonly= "ReadOnly" property to set the text box to read-only The code is as follows:1 //handling keyboard events prevents back key (Backspace) passwords or single-line, multiline text boxes except2 function Banbackspace (e) {3 varEV = e | | Window.Event;//Get Event Object4 varobj = Ev.target | | Ev.srcelement;//Get Event Source5 vart = Obj.type | | Obj.getattribute ('type');//Get Even

Found today in IE browser, when using the readonly= "ReadOnly" property to set the text box to read-only The code is as follows:1//Handling keyboard events prevents back key (Backspace) passwords or single-line, multiline text boxes except2functionBanbackspace (e) {3var ev = e | | window.event;//Get Event Object4var obj = Ev.target | | Ev.srcelement;//Get Event Source5var t = Obj.type | | Obj.getattribute (' type ');//Get Event Source Type6//Gets the

This article introduces the Backspace code of javascript instances. For more information, see The Code is as follows: Function banBackSpace (e ){Var ev = e | window. event; // obtain the event objectVar obj = ev.tar get | ev. srcElement; // obtain the event SourceVar t = obj. type | obj. getAttribute ('type'); // obtain the event source type.// Obtain the event type used as the judgment ConditionVar vReadOnly = obj. readOnly;Var vDisabled = obj. dis

//Handle keyboard event disable back key (Backspace) password or single line, multiline text box exceptfunction Banbackspace (e) {var ev = e | | window.event;//get Event Objectvar obj = Ev.target | | ev.srcelement;//get Event Sourcevar t = Obj.type | | obj.getattribute (' type ');//Get Event Source Type//Gets the type of event that is used as the judging conditionvar vreadonly = Obj.getattribute (' readonly ');var venabled = Obj.getattribute (' enable

Http://blog.chinaunix.net/uid-2282111-id-2113293.htmlIn the Linux/unix platform often use scanf from the keyboard to get characters, output characters after pressing backspace key to delete, will appear ^h, which is accustomed to the deletion by the BACKSPACE key users, feel very awkward, although you can by CTRL + Backspace key combination for delete functionThe

Using vi in ubuntu is a solution for changing the direction keys to garbled characters _ The backspace key cannot be used. This evening, the teacher assigned us a ubuntu Virtual Machine and said we would like to use it for experiments. Of course, it doesn't matter. My favorite is ubuntu, but it may be a very difficult experiment process for some people who are not familiar with linux.The teacher asked us to edit some files in ubuntu, which involved th

Right-click the block, CTRL + N, Shift + F10, F11, F5 refresh, and return key. The original text is as follows: // Block the function document by right-clicking, CTRL + N, Shift + F10, F11, F5 refresh, and backspace. oncontextmenu () {event. returnvalue = false;} // right-click the screen and select function window. onhelp () {return false} // block the F1 help function document. onkeydown () {If (window. event. altkey) (window. event. keycode = 3

The teacher assigned each of us an Ubuntu virtual machine, said to do the experiment. I certainly do not mind, my favorite is Ubuntu, but for some of the unfamiliar to Linux students, may be a very difficult experimental process.The teacher wants us to edit some files under Ubuntu, which involves the VI editor. In Ubuntu, the initial use of the VI is a problem, that is, when using the arrow keys in edit mode, does not make the cursor move, but in the command line appears [A [B] [C [d] letters, a

Copy Code code as follows: function Banbackspace (e) { var ev = e | | window.event;//Get Event Object var obj = Ev.target | | ev.srcelement;//Get Event Source var t = Obj.type | | Obj.getattribute (' type ');//Get Event Source Type Get the event type as a criterion var vreadonly = obj.readonly; var vdisabled = obj.disabled; Handling Undefined values Vreadonly = (Vreadonly = = undefined)? False:vreadonly; vdisabled = (vdisabled = = undefined)? true:vdisabled; When you hit the

Webbrowse how to disable backspace (return) 1. webbrowse attribute webbrowsershortcutsenable: Specifies whether to enable some shortcut keys in the webbrowser control, but the backspace is not in the control scope. This attribute cannot be used to disable backspace (return) 2. webbrowse event previewkeydown: the attribute E. Handled = true is not supported, and

The edit control in EnWin (Ucgui) is edited under numeric mode (decimal/16 binary/binary/floating-point number) and cannot be backspace using the BACKSPACE key, the main functions involved are:Edit_setbinmode ()Edit_setdecmode ()Edit_sethexmode ()Edit_setfloatmode ()?Once the edit control uses this class mode, the BACKSPACE key will not be deleted, and the workar

Copy codeThe Code is as follows:Function banBackSpace (e ){Var ev = e | window. event; // obtain the event objectVar obj = ev.tar get | ev. srcElement; // obtain the event SourceVar t = obj. type | obj. getAttribute ('type'); // obtain the event source type.// Obtain the event type used as the judgment ConditionVar vReadOnly = obj. readOnly;Var vDisabled = obj. disabled;// Process the undefined ValueVReadOnly = (vReadOnly = undefined )? False: vReadOnly;VDisabled = (vDisabled = undefined )? True

Today involves a problem, in the query criteria in the JSP, there are text boxes to enter filter criteria, there are drop-down boxes to select the filter criteria. The contents of the input box can be deleted by pressing the "Backspace" key, but the Backspace function needs to be shielded in the dropdown box, otherwise the rollback function of the page is performed. The code is as follows Copy Code c

^h ^ When Linux uses the backspace bar? workaroundExecuting scripts under Linux does not pay attention to the ^h when the wrong content needs to be deleted^h is not the H key meaning, is backspace. The main thing is that when your terminal backspace has a problem, it needs to be set.There are two ways to resolve this:1. To use the back Delete key (

Learning Source:74898123^h ^ When Linux uses the backspace bar? workaroundExecuting scripts under Linux does not pay attention to the ^h when the wrong content needs to be deleted^h is not the H key meaning, is backspace. The main thing is that when your terminal backspace has a problem, it needs to be set.There are two ways to resolve this:1. To use the back Del

A simple text editor implemented by the assembler, with detailed comments in the code.Ideas and Details:(1) In the center of the screen to initialize a piece of area, and positioning the cursor, the use of No. 16th Interrupt No. 0 function is stored in the Ah,al Scan code and ASCII code, thus the function key judgment.(2) To achieve the operation of the cursor, through the change of the DH,DL and number 10th interrupt 2nd function of the cursor settings, the upper and lower left and right to cha

Today, we have a problem. In the query conditions in jsp, you can enter filtering conditions in the text box, or Select filtering conditions in the drop-down box. The content in the input box can be deleted by pressing the "Backspace" key, but the backspace function needs to be blocked in the drop-down box. Otherwise, the page rollback function will be executed. The Code is as follows:Copy codeThe Code is a

The direction keys are garbled when vi is used in ubuntu. The backspace key cannot be used. ubuntuvi The direction keys are garbled when vi is used in ubuntu. The return key cannot be used. Problem: In Ubuntu, when vi is initially used and the direction keys are used in editing mode, the cursor does not move, but a B C D or other letters appear in the command line, in addition, the backspace cannot be use

First, the editor/etc/vim/vimrc.tinySince the owner of the/etc/vim/vimrc.tiny is the root user, the file must be modified under root privileges. Very simply, the penultimate sentence in this file is "set compatible", as follows:Changing the "compatible" to "nocompatible" non-compatible mode solves the problem of the direction key becoming ABCD. The next problem to solve the backspace key is also very simple, in the sentence after just add a sentence:

Recently because to play tensorflow, so the dusty ubantu to open, but configure the network time, is a mess, appeared in the insert mode, the input direction key can not move the cursor but become garbled; backspace key can not delete characters, can only move the problem of the cursor. Really be engaged in the "burn". Later found a good article finally solved the problem, here record, right when it is a note.There are several ways to solve this probl