标签：script false json.js name set opd desc pen 获取
AJAX 是一种用于创建快速动态网页的技术。
下面介绍两种动态加载DropDownList值的方法。
第一种：
View层
<select id="funcNum" name="funcNum"></select>
<script>
$(document).ready(function() {
showFuncId();
}
function showFuncId(){
$(‘#funcNum‘).empty();
var ciValue = $(‘#funcNum‘);
ciValue.append(‘<option value="">Pls Select</option>‘);
$.ajax({
url : u, //your actual url
type : ‘post‘,
dataType : ‘json‘,
success : function (opts) {
if (opts && opts.length > 0) {
var html = [];
for (var i = 0; i < opts.length; i++) {
html.push(‘<option value="‘+opts[i].id+‘">‘+opts[i].desc+‘</option>‘);
}
ciValue.append(html.join(‘‘));
}
}
});
}
</script>
Controller层
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
PrintWriter writer = response.getWriter();
net.sf.json.JSONArray array = JSONArray.fromObject(new ArrayList());//The list that contains actual data,use a new arrayList instead here
writer.append(array.toString());
return null;
第二种：
View层
<select id="funcNum" name="funcNum"></select>
<script>
$(function(){
$.ajax({
type: ‘POST‘,
url:url;//your actual url
dataType: ‘json‘,
cache: false,
async:false,
success:function(data) {
$(‘#funcNum‘).get(0).options.length = 0;
$(‘#funcNum‘).append(‘<option value="">Pls Select</option>‘);
$.each(data, function(i, obj) {
var option = $(‘<option />‘);
option.val(obj.id);
option.text(obj.desc);
$(‘#funcNum‘).append(option);
});
},
error: function() {
alert("Error while getting vehicle type results");
}
});
});
</script>
Controller层
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
PrintWriter writer = response.getWriter();
net.sf.json.JSONArray array = JSONArray.fromObject(new ArrayList());//The list that contains actual data,use a new arrayList instead here
writer.append(array.toString());
return null;
标签：script false json.js name set opd desc pen 获取
原文地址：http://www.cnblogs.com/uu5666/p/6639829.html
