如何通过jquery进行ajax搜索onkeyup

您应该检查该值是否随时间变化：

var searchRequest = null;$(function () {    var minlength = 3;    $("#sample_search").keyup(function () {        var that = this,        value = $(this).val();        if (value.length >= minlength ) { if (searchRequest != null)      searchRequest.abort(); searchRequest = $.ajax({     type: "GET",     url: "sample.php",     data: {         'search_keyword' : value     },     dataType: "text",     success: function(msg){         //we need to check if the value is the same         if (value==$(that).val()) {         //Receiving the result of search here         }     } });        }    });});

编辑：

searchRequest