backspace app

Window.onload=function () {document.getElementsByTagName ("Body") [0].onkeydown =function () {if (event.keycode==8) {var elem = event.srcelement;var name = Elem.nodename; if (name!= ' INPUT ' name!= ' TEXTAREA ') {Event.returnvalue = false;return;}var type_e = Elem.type.toUpperCase ();if (name== ' INPUT ' (type_e!= ' TEXT ' type_e!= ' TEXTAREA ' type_e!= ' PASSWORD ' type_e!= ' FILE ') {Event.returnvalue = false;return;}if (name== ' INPUT ' (elem.readonly==true | | elem.disabled ==true)) {

Handling keyboard events prevents back key (Backspace) passwords or single-line, multiline text boxes except

04. The "accumulate" and "Calculate" functions are implemented. The textbox does not allow the input of any character other than a number, but does not include the backspace key. The first value is not allowed to be 0, and the textbox does not. Private void button#click (object sender, EventArgs e) {double number1, number2; if (double. tryParse (txtNumber1.Text, out number1) = false) {MessageBox. show ("Incorrect start value"); txtNumber1.Focus (); tx

In Ubuntu9.04. conf is the configured code: Section "Serverflags" Option "DontZap" "no" EndSection. However, in Ubuntu9.10, the Option attribute DontZap is no longer available, which is simpler in 9.10: operation Method: System -- gt; preferences -- gt; keyboard, click the layout tab, and then click In Ubuntu 9.04, we configured this in xorg. conf. Code: Section "Serverflags" Option "DontZap" "no" EndSection However, in Ubuntu 9.10, the Option attribute DontZap is no longer available, wh

PhenomenonSECURECRT Login to the host, in the Python shell press the DELETE key, the ^h character appears.Python 3.4.3 (default, Oct 8, 17:58:21) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on Linuxtype "help", "copyright", "Cr Edits "or" license "for more information.>>> >>> import requests>>> >>> import D ^h ^hSolveTo modify the following information for session options or global options, tick the two boxes in the "Other Mappings" box.SecureCRT use Python to press

directory of the ~/.BASHRC file, which for those who have root access to the wood can be set, the wood has to be permanent and for all users of the method? The answer is, if you have to log in as root, and then greet the following method:Execution at the command line:echo "Rmmod pcspkr" >>/etc/rc.d/rc.localThis command means to append one to the /etc/rc.d/rc.local script, the content is:rmmod pcspkr. The purpose of this is to allow the system to remove the PCSPKR kernel module each time the boo

Label:1. Resolve cannot backspaceMethod 1:stty Erase ^h Under Oracle User, add the following statement in the user Environment profile. Bash_profile Stty Erase ^h Method 2: Operate on the SECURECRT tool Hook up the options in the diagram; In contrast, choose Method 2.2. Solved can't be up or downOracle Sqlplus on Linux cannot use the up and down keys to view commands and fret. The Rlwarp tool can help us solve this problem. Official: http://utopia.knoware.nl/~hlub/uck/rlwrap/ T

There are a lot of web site to solve this aspect, I am easy to read for my own future, so simply write down.Installing the ReadLine library solves the problem.Workaround:1. When we installed the ReadLine library, we were prompted to have the ReadLine library, but Python is still not working properly. This is due to the lack of a readline development package.2.yum-y Install readline-devel.x86_643. Recompile install python (centos6.6 upgrade Python article), problem solved.The ARROW key

Solution 1: The direction keys and backspace keys cannot be used normally in ubuntu vi. In ubuntu, the direction keys cannot be used in the editing status, the Return key cannot be deleted.Solution: you can install the vim full version. In the full version, the keyboard is normal. After installation, use the vi command. Install vim: ubuntu is pre-installed with the vim tiny version, but the vim full version is required. Run the following statement to

This article mainly introduced the JS realizes the simulation calculator backspace key to delete the text effect method, involves the JavaScript string interception operation related skill, needs the friend to be possible to refer to under ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26-27--28 29---30 31--32 33 34 35 36 37 38-39 40 41 42 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61-62 I hope t

Document.documentElement.onkeydown = function (evt) {var b =!! EVT, oevent = evt | | window.event;if (Oevent.keycode = = 8) {var node = b? OEvent.target:oEvent.srcElement;var reg =/^ (Input|textarea) $/i, Regtype =/^ (Text|textarea) $/i;if (!reg.test (node.nodename) | | |!regtype.test (node.type) | | node.readonly | | node.disabled) {if (b){Oevent.stoppropagation ();}Else{Oevent.cancelbubble = true;Oevent.keycode = 0;Oevent.returnvalue = false;}}}} Sometimes it's hard to use a read-only box, ca

Examples are as follows: The above disabled BACKSPACE Web page rollback function of the implementation code is a small series to share all the content, hope to give you a reference, but also hope that we support cloud habitat community.

This article is an example of how JS implements the simulation calculator backspace key to delete text effects. Share to everyone for your reference. as follows: The wants this article to help you with your JavaScript programming.

Label:I. Configure the Yum source and install the readline* configuration local yum 1, Mount disc Mount/dev/cdrom/mnt/media 2, create a new local Yun source configuration file vi/etc/ Yum.repos.d/local.repo Add the following information: [local] name=local baseurl=file:///mnt/media enable=1 gpgcheck=0 then yum-y install readline* two. Download and install Rlwrap tar ./configure Make Make install three. Modify the Oracle u

1. Installation of Ubuntu 9.04, found in the edit mode backspace backspace can not be used, very inconvenient.The original vim default is VI compatibility mode, set to incompatible mode is good:: Set nocompatibleYou can use Help to view the related settings.: Help CP: Help compatible2. After opening an existing file, the characters in the file cannot be deleted with the

This article describes the JavaScript ban back key (Backspace) instance code, the need for friends can refer to the 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; Hand

Editing some files under Linux, this involves the VI editor. Under Linux, the initial use of 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, and editing errors, even the usual about the backspace (backspace key) can not be used, can only be deleted with delete. In response to this question, there are many

VC + + line break, carriage return, single quotation marks, double quotation marks, backspace, jump, slash \, special characters in detail, \ r \ n = chr (+CHR), VC + + line symbol, VC + N newline characters, VC + + line, VC + + line, VC \ n Symbol, vc+ + line break, VC + + line, VC + + \n,vc++ to replace a line, VC + + to change lines, VC + + \ n Next line, VC + + down line, VC + + down, VC + +, a line, VC + +, vc+ + downlink, \b,

The Python 2.6.6 arrows with CentOS 6.5 and the backspace bar (Backspace) work correctly: The custom installed Python 2.7.6 found the arrow and the BACKSPACE (Backspace) exception when used: This is due to the lack of the ReadLine development package for the newly upgraded Python2.7.6: After recompiling, installing P

Used to execute scripts under Linux do not pay attention to the wrong content to be deleted when the ^h always appear, I did not know the truth before I can only run the script again, and later found that there are solutions, so record.^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