Implementation code of Select drop down box fuzzy query function
- 2021-07-04 18:00:35
- OfStack
select drop-down list box support input fuzzy query function, the design is very humanized, the following site to share the key code, everyone according to their own needs to add appropriate modifications, any questions welcome to give me feedback.
The key code is as follows:
<HTML>
<HEAD>
<META http-equiv='Content-Type' content='text/html; charset=gb2312'>
<TITLE> Drop-down box that can be entered </TITLE>
</HEAD>
<BODY >
<Script Language="Javascript">
var j = 0;
function SelectValue(obj)
{
var input = obj.parentNode.nextSibling;
document.all.box2.value = obj.options[obj.selectedIndex].text;
document.getElementById("txtSection").value=obj.options[obj.selectedIndex].value;
alert(document.getElementById("txtSection").value);
}
function InputValue(obj)
{
var n = 1;
var tmpObj;
var src = document.all.SelectOption;
var msg = document.all.msg;
if(event.keyCode != 40 && event.keyCode != 38 && event.keyCode != 13){
if(obj.value!=""){
msg.style.display="";
msg.innerHTML="";
if(msg.hasChildNodes())
{
msg.childNodes[0].parentNode.removeChild(msg.childNodes[0]);
}
for (var i=0;i<src.length;i++){
var selValue = document.createElement("div");
var selText = document.createElement("div");
selText.value = src(i).value;
selText.innerHTML = src(i).text;
if (src(i).text.toLowerCase().indexOf(obj.value.toLowerCase())==0){
selText.setAttribute("id","selText"+n);
selText.onmouseover=function (){
this.style.backgroundColor='#003399';
this.style.color ='#ffffff';
}
selText.onmouseout=function (){
this.style.backgroundColor='#ffffff';
this.style.color ='#000000';
}
selText.onclick=function (){
document.all.box2.value = this.innerHTML;
msg.style.display="none";
document.getElementById("txtSection").value=this.value;
}
msg.appendChild(selText);
n++;
}
}
}
else {
document.all.msg.style.display="none";
}
}
else {
//press down key
if(event.keyCode==40){
j++;
for (var i=0; i<src.length; i++)
{
tmpObj = document.getElementById("selText"+i);
if(tmpObj != null){
tmpObj.style.backgroundColor='#ffffff';
tmpObj.style.color ='#000000';
}
}
tmpObj = document.getElementById("selText"+j);
if(tmpObj != null){
tmpObj.style.backgroundColor='#003399';
tmpObj.style.color ='#ffffff';
}else{
j = 0;
}
}
//press up key
if (event.keyCode==38){
j--;
for (var i=0; i<src.length; i++)
{
tmpObj = document.getElementById("selText"+i);
if(tmpObj != null){
tmpObj.style.backgroundColor='#ffffff';
tmpObj.style.color ='#000000';
}
}
tmpObj = document.getElementById("selText"+j);
if(tmpObj != null){
tmpObj.style.backgroundColor='#003399';
tmpObj.style.color ='#ffffff';
}else{
j = 2;
}
}
//press enter key
if (event.keyCode==13){
tmpObj = document.getElementById("selText"+j);
document.all.box2.value = tmpObj.innerHTML;
msg.style.display="none";
document.getElementById("txtSection").value=tmpObj.value;
}
}
}
function SelMatch(src)
{
var currSel = document.all.box2.value;
for (var i=0;i<src.length;i++){
if (src(i).text==currSel)
{
src.options(i).selected = true;
}
}
}
function NoMsg()
{
if(document.activeElement.id=="msg")
return false;
else
document.all.msg.style.display='none';
}
</Script>
<TABLE border=0 cellPadding=1 cellSpacing=0 width="100%">
<TR>
<TD width="24%"><font face="Arial" size="2">Section</font></TD>
<TD COLSPAN=3 width="76%">
<div style="position:relative;">
<span style="margin-left:230px;width:18px;overflow:hidden;">
<select style="HEIGHT: 22px; WIDTH: 250px; margin-left:-232px;" onchange="SelectValue(this)" onclick="SelMatch(this)" id="SelectOption" name="SelectOption" >
<OPTION value='ALL' Selected>ALL</OPTION>
<OPTION value='0TEST1'>0TEST1 = Testing 1
<OPTION value='0TEST1'>0TEST2 = Testing 1
<OPTION value='0TEST1'>0TEST3 = Testing 1
<OPTION value='SECTION'>SECTION = Section Description XXXXX AAA
</OPTION>
</select></span>
<input name="box2" id="box2" style="width:230px;position:absolute;left:0px;" onkeyup="InputValue(this)" onblur="NoMsg()" onfocus="this.select();InputValue(this)" value="0" >
<div id="msg" style="border:1px solid green; font-size :14PX;white-space:nowrap;overflow:hidden;
width:230px;position:absolute;left:0px;top:20px;display:none"></div>
</div>
<Input Type="Hidden" Name="txtSection" id="txtSection">
</TD>
</TR>
</TABLE>
<p>
</BODY></HTML>