socialforge/app/views/users/_homework_search_input.html.erb

<input type="text" name="search" placeholder="输入作业、老师姓名的关键词进行搜索" class="subject-pop-search fr" />
<script type="text/javascript">
    var lastSearchCondition = '';
    var count = 0;
    function search_hws(e){
        if($(e.target).val().trim() == lastSearchCondition && lastSearchCondition != '')
        {
            return;
        }
        lastSearchCondition = $(e.target).val().trim();
        $.ajax({
            url: '<%= url_for(:controller => 'users', :action => 'user_search_homeworks') %>'+'?name='+ e.target.value+'&type=<%=type %>&is_import=<%=is_import %>',
            type:'get'
        });
    }

    function throttle(method,context,e){
        clearTimeout(method.tId);
        method.tId=setTimeout(function(){
            method.call(context,e);
        },500);
    }

    //查询项目
    $("input[name='search']").on('input', function (e) {
        throttle(search_hws,window,e);
    });

</script>