//事情委托$(document) .on("input propertychange", "#query", function(){var input = $(this).val();show(input); }); var show = function(txt){var info = "监听:<b>" + txt + "</b><br /><br />"+ "相关搜索:<br />" + showTags(txt);$(".info").html(info); } var showTags = function(txt){var tag = "";if(txt.length){ for (var i = 0; i < 3; i++) {tag += "<span class="tag">"+txt+"相关"+i+"</span>"; };}return tag;}希望本文所述对大家的jQuery程序设计有所帮助。