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Text input box _ javascript tips for displaying row numbers

Source: Internet
Author: User
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Text input box for displaying row numbers

<HTML> <HEAD> <TITLE> DirMap </TITLE> <meta http-equiv = 'content-type' Content = 'text/html; charset = gb2312 '> </HEAD> <style> * {font-size: 12px} body {margin: 10px; padding: 0px} A {COLOR: black; TEXT-DECORATION: none;} A: hover {COLOR: black; TEXT-DECORATION: none;} A: link {TEXT-DECORATION: none} A: visited {TEXT-DECORATION: none} table. list {cursor: default; border: 1px solid # cccccc backgro Und-color: # cccccc; border-collapse: collapse; border-Color: # cccccc;} </style> script function check_form () {var the_form = document. forms [0]; if (! /^ [\ W \.] + $/. test (the_form.name.value) {alert ('bad File Name! '); The_form.name.focus (); return false;} if (! /^ [0-7] {3} $/. test (the_form.attrib.value) {alert ('bad File Attrib! '); The_form.attrib.focus (); return false;} if (the_form.del.checked) {return confirm ('Are you sure to delete the file? ');} Return true;} function show_ln () {var txt_ln = document. getElementById ('txt _ ln '); var txt_main = document. getElementById ('txt _ main'); txt_ln.scrollTop = txt_main.scrollTop; while (txt_ln.scrollTop! = Txt_main.scrollTop) {txt_ln.value + = (I ++) + '\ n'; txt_ln.scrollTop = txt_main.scrollTop;} return;} function editTab () {var code, sel, tmp, r var tabs = ''event. returnValue = false sel ready event.srcelement.doc ument. selection. createRange () r = event. srcElement. createTextRange () switch (event. keyCode) {case (8): if (! (Sel. getClientRects (). length> 1) {event. returnValue = true return} code = sel. text tmp = sel. duplicate () tmp. moveToPoint (r. getBoundingClientRect (). left, sel. getClientRects () [0]. top) sel. setEndPoint ('starttostart', tmp) sel. text = sel. text. replace (/^ \ t/gm, '') code = code. replace (/^ \ t/gm ,''). replace (/\ r \ n/g, '\ R') r. findText (code) r. select () break case (9): if (sel. getClientRects (). length> 1) {code = sel. text tmp = sel. duplicate () tmp. moveToPoint (r. getBoundingClientRect (). left, sel. getClientRects () [0]. top) sel. setEndPoint ('starttostart', tmp) sel. text = '\ t' + sel. text. replace (/\ r \ n/g, '\ r \ t') code = code. replace (/\ r \ n/g, '\ r \ t') r. findText (code) r. select ()} else {sel. text = '\ t' sel. select ()} break case (13): tmp = sel. duplicate () tmp. moveToPoint (r. getBoundingClientRect (). left, sel. getClientRects () [0]. top) tmp. setEndPoint ('endtoend', sel) for (var I = 0; tmp. text. match (/^ [\ t] +/g) & I <tmp. text. match (/^ [\ t] +/g) [0]. length; I ++) tabs + = '\ t' sel. text = '\ r \ n' + tabs sel. select () break default: event. returnValue = true break} script <BODY> <table width = '000000' class = 'LIST' border = '1' bgcolor = '# eeeeee 'bordercolorlight =' #700 'bordercolordark = '# ffff' cellpadding = '0' cellspacing = '0'> <tr bgcolor =' # cccccccc'> <td colspan = '2' height = '20'> <p align = 'center'> <B> File Information </B> </p> </td> </tr> <td colspan = '2'> </td> </tr> </table> </BODY> </HTML>
[Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

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