文本框自动提示功能(有不明白的地方请留言)
前置代码：
<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Default2.aspx.cs” Inherits=”Default2″ %>
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>
<html xmlns=”http://www.w3.org/1999/xhtml”>
<head runat=”server”>
<title></title>
<script language=”javascript” type=”text/javascript”>
// JScript 文?件t
//作Á¡Â者?：êo李¤?军¨¹
//输º?入¨?工¡è程¨¬名?称?时º¡À弹Ì¡¥出?提¬¨¢示º?
var intIndex = 0; arrList = new Array();
function dearray(aa)//定¡§义°?array
{
arrList = aa.split(‘€’);
intIndex = arrList.length;
}
function projectNameTip(projectName) {
init();
dearray(projectName);
smanPromptList(arrList, “txtReservoirWater”); //txtReservoirWater代䨲表À¨ª你?要°a显?示º?提¬¨¢示º?内¨²容¨Y的Ì?文?本À?框¨°
}
function tablestyle() {
var reservoirwater = “<%=GetReservoirwater() %>”;
projectNameTip(reservoirwater); //水?库a水?位?值¦Ì自Á?动¡¥匹£¤配?
}
function init() {
if (arrList.constructor != Array) { alert(‘smanPromptList初?始º?化¡¥失º¡ì败㨹:第̨²一°?个?参?数ºy非¤?数ºy组Á¨¦!’); return; }
arrList.sort(function (a, b) {
if (a.length > b.length) return 1;
else if (a.length == b.length) return a.localeCompare(b);
else return -1;
}
);
}
function smanPromptList(arrList, objInputId) {
var objouter = document.getElementById(“__smanDisp”) //显?示º?的Ì?DIV对?象¨®
var objInput = document.getElementById(objInputId); //文?本À?框¨°对?象¨®
var selectedIndex = -1;
var intTmp; //循-环¡¤用®?的Ì?:)
if (objInput == null) { alert(‘smanPromptList初?始º?化¡¥失º¡ì败㨹:没?有®D找¨°到Ì?”‘ + objInputId + ‘”文?本À?框¨°’); return; }
//文?本À?框¨°失º¡ì去¨£¤焦1点Ì?
objInput.onblur = function () {
objouter.style.display = ‘none’;
}
//文?本À?框¨°按ã¡ä键¨¹抬¬¡ì起e
objInput.onkeyup = checkKeyCode;
//文?本À?框¨°得Ì?到Ì?焦1点Ì?
objInput.onfocus = checkAndShow;
function checkKeyCode(evt) {
evt = evt || window.event;
var ie = (document.all) ? true : false
if (ie) {
var keyCode = evt.keyCode
if (keyCode == 40 || keyCode == 38) { //下?上¦?
var isUp = false
if (keyCode == 40) isUp = true;
chageSelection(isUp)
} else if (keyCode == 13) {//回?车¦Ì
outSelection(selectedIndex);
} else {
checkAndShow(evt)
}
} else {
checkAndShow(evt)
}
divPosition(evt)
}
function checkAndShow(evt) {
var strInput = objInput.value
if (strInput != “”) {
divPosition(evt);
selectedIndex = -1;
objouter.innerHTML = “”;
for (intTmp = 0; intTmp < arrList.length; intTmp++) {
if (arrList[intTmp].substr(0, strInput.length).toLowerCase() == strInput.toLowerCase()) {
addOption(arrList[intTmp]);
}
}
objouter.style.display = ”;
} else {
objouter.style.display = ‘none’;
}
function addOption(value) {
objouter.innerHTML += “<div οnmοuseοver=\”this.className=’sman_selectedStyle’\” οnmοuseοut=\”this.className=”\” οnmοusedοwn=\”document.getElementById(‘” + objInputId + “‘).value='” + value + “‘\”>” + value + “</div>”
}
}
function chageSelection(isUp) {
if (objouter.style.display == ‘none’) {
objouter.style.display = ”;
} else {
if (isUp)
selectedIndex++
else
selectedIndex–
}
var maxIndex = objouter.children.length – 1;
if (selectedIndex < 0) { selectedIndex = 0 }
if (selectedIndex > maxIndex) { selectedIndex = maxIndex }
for (intTmp = 0; intTmp <= maxIndex; intTmp++) {
if (intTmp == selectedIndex) {
objouter.children[intTmp].className = “sman_selectedStyle”;
} else {
objouter.children[intTmp].className = “”;
}
}
}
function outSelection(Index) {
objInput.value = objouter.children[Index].innerText;
objouter.style.display = ‘none’;
}
function divPosition(evt) {
var left = 0;
var top = 0;
var e = objInput;
while (e.offsetParent) {
left += e.offsetLeft + (e.currentStyle ? (parseInt(e.currentStyle.borderLeftWidth)).NaN0() : 0);
top += e.offsetTop + (e.currentStyle ? (parseInt(e.currentStyle.borderTopWidth)).NaN0() : 0);
e = e.offsetParent;
}
left += e.offsetLeft + (e.currentStyle ? (parseInt(e.currentStyle.borderLeftWidth)).NaN0() : 0);
top += e.offsetTop + (e.currentStyle ? (parseInt(e.currentStyle.borderTopWidth)).NaN0() : 0);
objouter.style.top = (top + objInput.clientHeight) + ‘px’;
objouter.style.left = left + ‘px’;
objouter.style.width = objInput.clientWidth;
}
}
document.write(“<div id=’__smanDisp’ style=’position:absolute;display:none;background:#E8F7EB;border: 1px solid #CCCCCC;font-size:14px;cursor: default;’ onbulr> </div>”);
document.write(“<style>.sman_selectedStyle{background-Color:#102681;color:#FFFFFF}</style>”);
function getAbsoluteHeight(ob) {
return ob.offsetHeight
}
function getAbsoluteWidth(ob) {
return ob.offsetWidth
}
function getAbsoluteLeft(ob) {
var mendingLeft = ob.offsetLeft;
while (ob != null && ob.offsetParent != null && ob.offsetParent.tagName != “BODY”) {
mendingLeft += ob.offsetParent.offsetLeft;
mendingOb = ob.offsetParent;
}
return mendingLeft;
}
function getAbsoluteTop(ob) {
var mendingTop = ob.offsetTop;
while (ob != null && ob.offsetParent != null && ob.offsetParent.tagName != “BODY”) {
mendingTop += ob.offsetParent.offsetTop;
ob = ob.offsetParent;
}
return mendingTop;
}
Number.prototype.NaN0 = function () {
return isNaN(this) ? 0 : this;
}
</script>
</head>
<body οnlοad=”tablestyle()”>
<form id=”form1″ runat=”server”>
<div>
<td valign=”bottom” style=”width: 240px;”>
自Á?动¡¥显?示º?值¦Ì：êo<asp:TextBox ID=”txtReservoirWater” onKeyUp=”clearNoNum(event,this)” onBlur=”checkNum(this)”
runat=”server”></asp:TextBox>
</td>
</div>
</form>
</body>
</html>
后置代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public string GetReservoirwater()
{
string reservoirwater = string.Empty;
DataTable dt = new DataTable();
dt.Columns.Add(“RESERVOIRWATER”,typeof(string));
DataRow dr = dt.NewRow();
dr[“RESERVOIRWATER”]=”1″;
dt.Rows.Add(dr);
DataRow dr1 = dt.NewRow();
dr1[“RESERVOIRWATER”] = “1”;
dt.Rows.Add(dr1);
DataRow dr2 = dt.NewRow();
dr2[“RESERVOIRWATER”] = “3”;
dt.Rows.Add(dr2);
DataRow dr3 = dt.NewRow();
dr3[“RESERVOIRWATER”] = “4”;
dt.Rows.Add(dr3);
DataRow dr5 = dt.NewRow();
dr5[“RESERVOIRWATER”] = “5”;
dt.Rows.Add(dr5);
DataRow dr6 = dt.NewRow();
dr6[“RESERVOIRWATER”] = “5”;
dt.Rows.Add(dr6);
for (int i = 0; i < dt.Rows.Count; i++)
{
reservoirwater = reservoirwater + dt.Rows[i][“RESERVOIRWATER”].ToString() + “€”;
}
return reservoirwater;
}
}
去掉系统自带的提示，请看下一章。
今天的文章文本框自动提示功能分享到此就结束了，感谢您的阅读，如果确实帮到您，您可以动动手指转发给其他人。
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