引入 jquery
css
<style type="text/css">.search{ left: 0; display: inline;position: relative; } #auto_div{ display: none; width: 196px; border: 1px #74c0f9 solid; background: #FFF; position: absolute; top: 25px; left: 0; color: #323232; z-index:10;overflow-y:scroll;height:190px;}
</style>
script<script type="text/javascript">//var test_list = []; $.ajax({url: '后台访问',type: "post",//dataType: "json",success: function (source) {test_list = source;//直接返回list集合即可,本例 test_list.rows( rows 对象)
}});var old_value = ""; var highlightindex = -1; //高亮 //自动完成 function AutoComplete(auto, search, mylist) { if ($("#" + search).val() != old_value || old_value == "") { var autoNode = $("#" + auto); //缓存对象(弹出框) var carlist = new Array(); var n = 0; old_value = $("#" + search).val(); for (i in mylist) { if (mylist[i].name.indexOf(old_value) >= 0) { carlist[n++] = mylist[i].name; } } if (carlist.length == 0) { autoNode.hide(); return; } autoNode.empty(); //清空上次的记录 for (i in carlist) { var wordNode = carlist[i]; //弹出框里的每一条内容 var newDivNode = $("<div>").attr("id", i); //设置每个节点的id值 newDivNode.attr("style", "font:14px/25px arial;height:25px;padding:0 8px;cursor: pointer;"); newDivNode.html(wordNode).appendTo(autoNode); //追加到弹出框 //鼠标移入高亮,移开不高亮 newDivNode.mouseover(function () { if (highlightindex != -1) { //原来高亮的节点要取消高亮(是-1就不需要了) autoNode.children("div").eq(highlightindex).css("background-color", "white"); } //记录新的高亮节点索引 highlightindex = $(this).attr("id"); $(this).css("background-color", "#ebebeb"); }); newDivNode.mouseout(function () { $(this).css("background-color", "white"); }); //鼠标点击文字上屏 newDivNode.click(function () { //取出高亮节点的文本内容 var comText = autoNode.hide().children("div").eq(highlightindex).text(); highlightindex = -1; //文本框中的内容变成高亮节点的内容 $("#" + search).val(comText); }) if (carlist.length > 0) { //如果返回值有内容就显示出来 autoNode.show(); } else { //服务器端无内容返回 那么隐藏弹出框 autoNode.hide(); //弹出框隐藏的同时,高亮节点索引值也变成-1 highlightindex = -1; } } } //点击页面隐藏自动补全提示框 document.onclick = function (e) { var e = e ? e : window.event; var tar = e.srcElement || e.target; if (tar.id != search) { if ($("#" + auto).is(":visible")) { $("#" + auto).css("display", "none") } } } } $(function () { old_value = $("#gdsNameId").val(); $("#gdsNameId").focus(function () { if ($("#gdsNameId").val() == "") { AutoComplete("auto_div", "gdsNameId", test_list.rows); } }); $("#gdsNameId").keyup(function () { AutoComplete("auto_div", "gdsNameId", test_list.rows); }); }); </script>
html
<div class="search">
<input id="gdsNameId" type="text" autocomplete="off" name="gdsName" value="${gdsName}" class="form-control"/><div id="auto_div"></div>
</div>