可搜索输入的下拉框(下拉菜单) - 单身小熊's Blog
可搜索输入的下拉框(下拉菜单)
提醒 复制代码后可点此测试代码运行效果
可搜索输入的下拉框(下拉菜单)
效果:
<HTML>
<HEAD>
<TITLE>可搜索输入的下拉框(下拉菜单)</TITLE>
</HEAD>
<Script Language="JavaScript">
<!--
var whichText;
function selectStation(obj) {
var objSelStation = obj;
if (obj.selectedIndex != -1) {
var stationName = obj.options[obj.selectedIndex].text;
whichText.value = stationName;
}
var stobj= document.getElementsByName('hospitalCode')[0];
//鼠标单击某一选项选定后关闭下拉框
showDivStation(this, false,'hospitalCode')
}
//响应text的事件
var pageD =0, pageU;
function similarFind(txtObj,seledName) {
var curStationName = txtObj.value;
var objSelStation = document.getElementsByName(seledName)[0];
var stationLength = objSelStation.options.length;
var flag = true;
pageU = pageD;
//从起始的文字匹配 用text中的数据跟下拉框中的数据
for (var i=0; i<stationLength; i++) {
var stationName = objSelStation.options[i].text;
var re = new RegExp("^" + curStationName);
if (stationName.match(re)) {
if (i<stationLength - 10) {
objSelStation.selectedIndex = i + 10;
}
objSelStation.selectedIndex = i;
pageD = i;
pageU = i;
flag = false;
break;
}
}
////从文字中匹配 用text中的数据跟下拉框中的数据
if(flag) {
for (var i=0; i<stationLength; i++) {
var stationName = objSelStation.options[i].text;
var re2 = new RegExp("^.*" + curStationName+'.*$');
if (stationName.match(re2)) {
if (i<stationLength - 10) {
objSelStation.selectedIndex = i + 10;
}
objSelStation.selectedIndex = i;
pageD = i;
pageU = i;
break;
}
}
}
//响应下移键
if(event.keyCode==40) {
pageD++;
if(pageD==objSelStation.options.length) pageD=0;
txtObj.value=objSelStation.options[pageD].text ;
objSelStation.selectedIndex = pageD;
}
//响应上移键
if(event.keyCode==38) {
--pageU;
if(pageU<0) pageU=objSelStation.options.length-1;
txtObj.value = objSelStation.options[pageU].text;
objSelStation.selectedIndex = pageU;
}
}
//下拉框显示位置
function showDivStation(obj, b,selName) {
var divStation = document.getElementsByName(selName)[0]
if (b) {
whichText = obj;
divStation.style.display="block";
similarFind(obj,selName);
} else {
divStation.style.display="none";
}
}
function removeNull(node) {
if(node.value=='--未选择--')
node.value = '';
}
//-->
</Script>
<BODY bgcolor="#FFFFFF" topmargin="0" leftmargin="0">
<form name="caseLhBaseForm">
<table>
<tr>
<td valign="top">医院</TD>
<td>
<input type="text" name="hospitalCodeName"
style="width: 330px"
onfocus="showDivStation(this, true,'hospitalCode')"
onclick="removeNull(this)"
onkeyup="similarFind(this,'hospitalCode')"
value="--未选择--">
<select size="6" name="hospitalCode"
style="display: none; width: 330px;"
onclick="selectStation(this)">
<option value="">--未选择--</option>
<option value="340403007">北京上地医院</option>
<option value="340402006">北京回龙观医院</option>
<option value="340401005">北京中关村医院</option>
<option value="340401005">上地第二医院</option>
<option value="340403007">回龙观第二医院</option>
<option value="340402006">朝阳医院</option>
<option value="340401005">海淀医院</option>
<option value="340401005">东城区医院</option>
</select>
</td>
</tr>
</table>
</form>
</BODY>
</HTML>
2022年9月27日 13:02
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