动态下拉框的实现

[wmgjs]

页面中的文本框，要求客户填写的时候，如果是有相似值的话，填充到下拉菜单中去
比如很多邮箱登陆的时候都有，当客户输入：012的时候，下拉自动出现0121,0129,01288,012521...
在数据库中的center表的c_number字段中去查找
select c_number from center where c_number like '012%'
然后填充到下拉列表供选择！
各位大哥帮帮忙，给个完整的解决案例

[wmgjs]

好像可以用ajax动态提交后返回下拉框的值？
但是不知道怎么去实现

[helanye]

类似搜索功能吗？

[helanye]

我以前作过类似的搜索功能，要不要部分代码呢？

[helanye]

<script language="javascript">
var intIndex=0;arrList = new Array();
arrList[intIndex++] = "1sdfsdf.com";
arrList[intIndex++] = "a11sdafs.net";
arrList[intIndex++] = "b22dsafsdf";
arrList[intIndex++] = "c333asdfsadf";
arrList[intIndex++] = "4444dsafasdf";
arrList[intIndex++] = "dddsfddsafdsaf";
arrList[intIndex++] = "121213dsafsdaf";
arrList[intIndex++] = "43213asdfadsf";
arrList[intIndex++] = "dsa3121dasf3";
arrList[intIndex++] = "a213";
arrList[intIndex++] = "323313";
arrList[intIndex++] = "3213";
arrList[intIndex++] = "32213";
arrList[intIndex++] = "dsfsdddd";
arrList[intIndex++] = "ds11dfsfd";
arrList[intIndex++] = "ffdafd";
arrList[intIndex++] = "afdfd";
arrList[intIndex++] = "afd";
arrList[intIndex++] = "baffad";
arrList[intIndex++] = "2fda2fd";
arrList[intIndex++] = "dasd";function smanPromptList(arrList,objInputId){
this.style = "background:#E8F7EB;border: 1px solid #CCCCCC;font-size:14px;cursor: default;"
if (arrList.constructor!=Array){alert('smanPromptList初始化失败:第一个参数非数组!');return ;}
window.onload =function() {
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;
})
var objouter=document.getElementById("__smanDisp") //显示的DIV对象
var objInput = document.getElementById(objInputId); //文本框对象
var selectedIndex=-1;
var intTmp; //循环用的:)
if (objInput==null) {alert('smanPromptList初始化失败:没有找到"'+objInputId+'"文本框');return ;}
//文本框失去焦点
objInput.onblur=function(){
objouter.style.display='none';
}
//文本框按键抬起
objInput.onkeyup=checkKeyCode;
//文本框得到焦点
objInput.onfocus=checkAndShow;
//检查光标
function checkKeyCode(){
var ie = (document.all)? true:false
if (ie){
var keyCode=event.keyCode
if (keyCode==40||keyCode==38){ //下上
var isUp=false
if(keyCode==40) isUp=true ;
chageSelection(isUp)
}else if (keyCode==13){//回车
outSelection(selectedIndex);
}else{
checkAndShow()
}
}else{
checkAndShow()
}
divPosition()
}
　　//检查并显示
　　　　function checkAndShow(){
var strInput = objInput.value
if (strInput!=""){
divPosition();
selectedIndex=-1;
objouter.innerHTML ="";
for (intTmp=0;intTmp<arrList.length;intTmp++){
if (arrList[intTmp].substr(0, strInput.length).toUpperCase()==strInput.toUpperCase()){
addOption(arrList[intTmp]);
}
}
objouter.style.display='';
}else{
objouter.style.display='none';
}
//将值添加到div中
function addOption(value){
objouter.innerHTML +="<div onmouseover=\"this.className='sman_selectedStyle'\" onmouseout=\"this.className=''\" onmousedown=\"document.getElementById('"+objInputId+"').value='" + value + "'\">" + value + "</div>"
}
}
//光标移动显示
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="";
}
}
}
//将div的值显示在文本框中
function outSelection(Index){
objInput.value = objouter.children[Index].innerText;
objouter.style.display='none';
}
//计算div的定位
function divPosition(){
objouter.style.top =getAbsoluteHeight(objInput)+getAbsoluteTop(objInput);
objouter.style.left =getAbsoluteLeft(objInput);
objouter.style.width=getAbsoluteWidth(objInput)
}
}
document.write("<div id='__smanDisp' style='position:absolute;display:none;" + this.style + "' onbulr> </div>");
document.write("<style>.sman_selectedStyle{background-Color:#102681;color:#FFFFFF}</style>");
//高度
function getAbsoluteHeight(ob){
return ob.offsetHeight
}
//宽度
function getAbsoluteWidth(ob){
return ob.offsetWidth
}
//Lef位置
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 ;
}
//Top位置
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 ;
}
}
smanPromptList(arrList,"inputer")
</script>
你去参考下吧，你现在的问题是怎样去数据库读取数据。

[wmgjs]

无法满足需求啊

[helanye]

什么需求满足不了呢?你不是想用js实现那种搜索功能吗?

[helanye]

我也作过类似的功能,首先从数据库中读取数据,然后通过正则表达式过滤那些需要的显示在div中就可以了.这样就实现你想要的效果了.