js 实现下拉框的搜索
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>
<div style="width:200px;height:20px;" >
<input type="text" style="width:200px;height:20px;" onclick="myClick();" id="myInput">
</div>
<div id="searchdiv" style="display:none;z-index:3; width:200px;height:20px;" onMouseOver="mouseOver()" onMouseOut="mouseOut()">
<input type="text" id="search" onkeyup="mysearch()" style="width:200px;height:20px;">
</div>
<div id="checkboxdiv" style="display:none;border:1px solid #A9A9A9;width:200px;z-index:2;overflow-y :scroll;height:100px;background-color:white; " onMouseOver="mouseOver()" onMouseOut="mouseOut()">
</div>
</body>
</html>
<script type="text/javascript">
var array = [{id:1,value:"红色"},{id:2,value:"白色"},{id:3,value:"黑色"}];
var checkboxdiv=document.getElementById("checkboxdiv");
var indiv=false;
var search=document.getElementById("search");
var selectId=[];
var selectValues=[];
window.onload=function(){
for(var i=0;i<array.length;i++){
var tmpdiv=document.createElement("div");
var tmpinput=document.createElement("input");
tmpinput.setAttribute("name","mycheckbox");
tmpinput.setAttribute("type","checkbox");
tmpinput.setAttribute("onclick","mycheck(this)");
tmpinput.setAttribute ("value",array[i]["id"]);
var tmptext=document.createTextNode(array[i]["value"]);
tmpdiv.appendChild(tmpinput);
tmpdiv.appendChild(tmptext);
checkboxdiv.appendChild(tmpdiv);
}
document.onclick=function(event){
if(event.target.id=="myInput"||indiv){
return;
}
checkboxdiv.style.display="none";
document.getElementById("searchdiv").style.display="none";
}
};
function myClick(){
document.getElementById("searchdiv").style.display="block";
checkboxdiv.style.display="block";
}
function mouseOver(){
indiv=true;
}
function mouseOut(){
indiv=false;
}
//checkbox 点击事件
function mycheck(obj){
if(obj.checked){
selectId.push(obj.value);
selectValues.push(obj.nextSibling.nodeValue);
}else{
for(var i=0;i<selectId.length;i++){
if(selectId[i]==obj.value){
selectId.splice(i,1);
selectValues.splice(i,1);
}
}
}
console.log(selectValues);
document.getElementById("myInput").value=selectValues;
}
//模糊查询
function mysearch(){
var checkboxlist=document.getElementsByName("mycheckbox");
for(var i=0;i<checkboxlist.length;i++){
if(checkboxlist[i].nextSibling.nodeValue.indexOf(search.value)==-1){
checkboxlist[i].parentNode.style.display="none";
}else{
checkboxlist[i].parentNode.style.display="block";
}
}
}
</script>
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