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发一个数据过滤的代码，很简单，有用的着的拿去
时间：2022-04-20 09:00:02 | 栏目：
JavaScript代码
| 点击：次
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- saved from url=(0058)http://www.barelyfitz.com/projects/filterlist/example.html --> <HTML><HEAD><TITLE>Filterlist Example</TITLE> <META http-equiv=Content-Type content="text/html; charset=gb2312"> <script type="text/javascript"> <!-- /*==================================================* $Id: filterlist.js,v 1.3 2003/10/08 17:13:49 pat Exp $ Copyright 2003 Patrick Fitzgerald http://www.barelyfitz.com/webdesign/articles/filterlist/ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ?-1307 USA *==================================================*/ function filterlist(selectobj) { //================================================== // PARAMETERS //================================================== // HTML SELECT object // For example, set this to document.myform.myselect this.selectobj = selectobj; // Flags for regexp matching. // "i" = ignore case; "" = do not ignore case // You can use the set_ignore_case() method to set this this.flags = 'i'; // Which parts of the select list do you want to match? this.match_text = true; this.match_value = false; // You can set the hook variable to a function that // is called whenever the select list is filtered. // For example: // this.hook = function() { //alert()} // Flag for debug alerts // Set to true if you are having problems. this.show_debug = false; //================================================== // METHODS //================================================== //-------------------------------------------------- this.init = function() { // This method initilizes the object. // This method is called automatically when you create the object. // You should call this again if you alter the selectobj parameter. if (!this.selectobj) return this.debug('selectobj not defined'); if (!this.selectobj.options) return this.debug('selectobj.options not defined'); // Make a copy of the select list options array this.optionscopy = new Array(); if (this.selectobj && this.selectobj.options) { for (var i=0; i < this.selectobj.options.length; i++) { // Create a new Option this.optionscopy[i] = new Option(); // Set the text for the Option this.optionscopy[i].text = selectobj.options[i].text; // Set the value for the Option. // If the value wasn't set in the original select list, // then use the text. if (selectobj.options[i].value) { this.optionscopy[i].value = selectobj.options[i].value; } else { this.optionscopy[i].value = selectobj.options[i].text; } } } } //-------------------------------------------------- this.reset = function() { // This method resets the select list to the original state. // It also unselects all of the options. this.set(''); } //-------------------------------------------------- this.set = function(pattern) { // This method removes all of the options from the select list, // then adds only the options that match the pattern regexp. // It also unselects all of the options. var loop=0, index=0, regexp, e; if (!this.selectobj) return this.debug('selectobj not defined'); if (!this.selectobj.options) return this.debug('selectobj.options not defined'); // Clear the select list so nothing is displayed this.selectobj.options.length = 0; // Set up the regular expression. // If there is an error in the regexp, // then return without selecting any items. try { // Initialize the regexp regexp = new RegExp(pattern, this.flags); } catch(e) { // There was an error creating the regexp. // If the user specified a function hook, // call it now, then return if (typeof this.hook == 'function') { this.hook(); } return; } // Loop through the entire select list and // add the matching items to the select list for (loop=0; loop < this.optionscopy.length; loop++) { // This is the option that we're currently testing var option = this.optionscopy[loop]; // Check if we have a match if ((this.match_text && regexp.test(option.text)) || (this.match_value && regexp.test(option.value))) { // We have a match, so add this option to the select list // and increment the index this.selectobj.options[index++] = new Option(option.text, option.value, false); } } // If the user specified a function hook, // call it now if (typeof this.hook == 'function') { this.hook(); } } //-------------------------------------------------- this.set_ignore_case = function(value) { // This method sets the regexp flags. // If value is true, sets the flags to "i". // If value is false, sets the flags to "". if (value) { this.flags = 'i'; } else { this.flags = ''; } } //-------------------------------------------------- this.debug = function(msg) { if (this.show_debug) { alert('FilterList: ' + msg); } } //================================================== // Initialize the object //================================================== this.init(); } //--> </script> <META content="MSHTML 6.00.2900.3020" name=GENERATOR></HEAD> <BODY> <H1>Filterlist Example</H1> <FORM name=myform action=""><SELECT size=5 name=myselect> <OPTION>Keanu Reeves<OPTION>Laurence Fishburne<OPTION>Monica Bellucci<OPTION>Daniel Bernhardt<OPTION>Nona Gaye<OPTION>Lachy Hulme<OPTION>Nathaniel Lees<OPTION>Harry J. Lennix<OPTION>Matt McColm<OPTION>Carrie-Anne Moss<OPTION>Collin Chou<OPTION>Genevieve O'Reilly<OPTION>Harold Perrineau Jr.<OPTION>Jada Pinkett Smith<OPTION>Adrian Rayment<OPTION>Neil Rayment<OPTION>Bruce Spence<OPTION>Hugo Weaving<OPTION>Lambert Wilson<OPTION>Anthony Wong</OPTION></SELECT> <SCRIPT type=text/javascript> <!-- var myfilter = new filterlist(document.myform.myselect); //--> </SCRIPT> <P>Filter: <A title="Clear the filter" href="javascript:myfilter.reset()">Clear</A> <A title="Show items starting with A" href="javascript:myfilter.set('^A')">A</A> <A title="Show items starting with B" href="javascript:myfilter.set('^B')">B</A> <A title="Show items starting with C" href="javascript:myfilter.set('^C')">C</A> <A title="Show items starting with D" href="javascript:myfilter.set('^D')">D</A> <A title="Show items starting with E" href="javascript:myfilter.set('^E')">E</A> <A title="Show items starting with F" href="javascript:myfilter.set('^F')">F</A> <A title="Show items starting with G" href="javascript:myfilter.set('^G')">G</A> <A title="Show items starting with H" href="javascript:myfilter.set('^H')">H</A> <A title="Show items starting with I" href="javascript:myfilter.set('^I')">I</A> <A title="Show items starting with J" href="javascript:myfilter.set('^J')">J</A> <A title="Show items starting with K" href="javascript:myfilter.set('^K')">K</A> <A title="Show items starting with L" href="javascript:myfilter.set('^L')">L</A> <A title="Show items starting with M" href="javascript:myfilter.set('^M')">M</A> <A title="Show items starting with N" href="javascript:myfilter.set('^N')">N</A> <A title="Show items starting with O" href="javascript:myfilter.set('^O')">O</A> <A title="Show items starting with P" href="javascript:myfilter.set('^P')">P</A> <A title="Show items starting with Q" href="javascript:myfilter.set('^Q')">Q</A> <A title="Show items starting with R" href="javascript:myfilter.set('^R')">R</A> <A title="Show items starting with S" href="javascript:myfilter.set('^S')">S</A> <A title="Show items starting with T" href="javascript:myfilter.set('^T')">T</A> <A title="Show items starting with U" href="javascript:myfilter.set('^U')">U</A> <A title="Show items starting with V" href="javascript:myfilter.set('^V')">V</A> <A title="Show items starting with W" href="javascript:myfilter.set('^W')">W</A> <A title="Show items starting with X" href="javascript:myfilter.set('^X')">X</A> <A title="Show items starting with Y" href="javascript:myfilter.set('^Y')">Y</A> <A title="Show items starting with Z" href="javascript:myfilter.set('^Z')">Z</A> <P><!-- Note: if you have a very large select list, you should deactivate the real-time filtering on the INPUT field below - remove the onKeyUp attribute. -->Filter by regular expression:<INPUT onkeyup=myfilter.set(this.value) name=regexp> <INPUT onclick=myfilter.set(this.form.regexp.value) type=button value=Filter> <INPUT onclick="myfilter.reset();this.form.regexp.value=''" type=button value=Clear> <INPUT onclick=myfilter.set_ignore_case(!this.checked) type=checkbox name=toLowerCase> Case-sensitive </FORM></P></BODY></HTML>
[Ctrl+A 全选 注:
引入外部Js需再刷新一下页面才能执行
]
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