输入框中根据用户输入内容动态查询

//等待用户不输入 1 秒后再去执行 loadData
var loseInputMillsecs = 1000;
var clocker = null;
function loadData()
{
console.info("do load data list");
clocker = null;
}
function innerKeydown()
{
if(null == clocker)
{
clocker = setTimeout(loadData,loseInputMillsecs);
}
else//连续击键，重新开始计时
{
clearTimeout(clocker);
clocker = setTimeout(loadData,loseInputMillsecs);
}
}
$('#statementContent').find('#moudel_selectex>input').keydown(function(){
innerKeydown();
})
http://blog.csdn.net/lizhihaoweiwei/article/details/51221985