backspace score

may have used sqlplus people know that in the Sqlplus connection Oracle after the session interface is unable to use the arrow keys and backspace, this is a more troublesome point, often have a SQL write wrong, can not be modified to start again very troublesome, People who have used MySQL must not get used to it, but fortunately there are 2 useful tools available under Linux to solve this problem, they are rlwrap and ReadLine, Through the two tools t

Programme one:Problem:Ubuntu VI in the editing state of the arrow keys can not be used, as well as the grid key can not be deleted and so we are accustomed to some of the keys can not be used.Workaround:The vim full version can be installed, the keyboard is normal under the full version, and the VI command is also used after installation.Install Vim:Ubuntu is preinstalled with the Vim tiny version, and requires a vim full version. Execute the following statement to install the VIM full version:s

Programme one:Problem:Ubuntu VI in the editing state of the arrow keys can not be used, as well as the grid key can not be deleted and so we are accustomed to some of the keys can not be used.Workaround:The vim full version can be installed, the keyboard is normal under the full version, and the VI command is also used after installation.Install Vim:Ubuntu is preinstalled with the Vim tiny version, and requires a vim full version. Execute the following statement to install the VIM full version:$

Environment: VirtualBox4.1 + RedHat Linux 6 Question: Press the BACKSPACE key to appear the question mark As shown in the figure: Problem Analysis: Misuse of Reset command. Solve: Setting the environment variable (set in the text interface, which is similar to the Windows DOS interface): Under Bash, execute the following statement: $ stty Erase ^? or add Stty erase ^? to the. Bash_profile. Under CSH, execute the following statement: $ stty E

Java code function DisableF5 () { With (event) { //F5 and Ctrl+r if (keycode==116 | | (Ctrlkey keycode==82)) { Event.keycode = 0; Event.cancelbubble = true; return false; } } } Document.onkeydown = DisableF5; Java code function Document.onkeydown () { if ((event.keycode==8) | | //Mask BACKSPACE delete key (event.keycode==116) | | //Shielded F5 Refresh key (Event.ctrlkey event.keycode==82)) { //ctrl + R

ASP tutorial. NET textbox can only enter numbers, backspace, decimal point (only one decimal point and cannot be in first place) private void Textbox1_keypress (object sender, KeyPressEventArgs e){e.handled =! (Char.isnumber (E.keychar) | | | e.keychar = = (char) 8 | | | e.keychar = = '. ');if (!e.handled) (sender as textbox). Tag = (sender as textbox). text;//Record last correct input} private void textBox1_TextChanged (object sender, Event

The following is a JS fragment tested in Ie9,firebox 10.0.2: Copy Code code as follows: $ (document). KeyDown (function (e) { var doprevent; if (E.keycode = = 8) { var d = E.srcelement | | E.target; if (d.tagname.touppercase () = = ' INPUT ' | | d.tagname.touppercase () = = ' TEXTAREA ') { doprevent = D.readonly | | d.disabled; } Else Doprevent = true; } Else Doprevent = false; if (doprevent) E.preventdefault (); }); Code on how to determine the

Sometimes it's hard to use a read-only text box, can be found today, read-only text box has a flaw, when the mouse focus in the text box when the Back button (BackSpace), will be back to the previous page, the problem is a bit annoying, the user is not clear can input, If he sees a text box that wants to change something in it, click on it, and it's possible that all the data you've filled out will be lost. So write a method for everyone to put in wh

In fact, said disable is not completely disabled, the back key in the browser defaults to click the Back button, as long as the normal text input can also be used, in other cases the BACKSPACE key is banned. See jquery Implementation code: Copy Code code as follows: $ (function () { function Dokey (event) { var ele = Event.target; var elename = Ele.nodename; var flag = true; if (elename== "INPUT" | | elename== "TEXTAREA" | | elename== "

Crm resource score OverviewIn the Heartbeat of V2, to combine resource monitoring and switching, multi-node clusters are also supported, heartbeat provides an integration policy to control the switching policies between nodes of each resource in the cluster. This point mechanism is used to calculate the total score of each node. The highest score is used to manag

Crm resource score overview in Heartbeat of V2, in order to combine resource monitoring and switching, multi-node clusters are also supported, heartbeat provides an integration policy to control the switching policies between nodes of each resource in the cluster. This integration mechanism is used to calculate the total score of each node ,... Crm resource score

code, and deploy the Lucene-driven full-text search cluster. You will find it works very well, fast and accurate.Then you wonder: Why is Lucene so awesome?This article, which focuses on Tf-idf,okapi BM-25 and the general relevance score, and the next article (main introduction index) will tell you the basic concepts behind full-text search.CorrelationFor each search query, it is easy to define a "related score