json返回的数据：
var json = { "2211":"内容1", "2212":"内容2", "2213":"内容3", "2214":"内容4" }
javascript:
window.onload=function(){
$.each(json,function(i,n){
$(‘#Select‘).append(‘<option value=‘+i+‘>‘+n+‘</option>‘)
})
var options=$("#Select option:selected");
$("#Select option").click(function(){
console.log(options.val());
alert(options.val())
})
}
html:
<select id="Select" > </select>
原文：http://www.cnblogs.com/Web-Architecture/p/5133305.html