本文实例讲述了jQuery实现Email邮箱地址自动补全功能代码。分享给大家供大家参考,具体如下:
jQuery Email邮箱地址自动补全代码,输入Email时,会自动加入@符号,在输入框中输入“qq”、“Sina”、“163”等等可以看到效果;鼠标经过提示Email时,高亮该条Email,鼠标点击Email时,文本框内容替换成该条Email,并删除提示层.
运行效果截图如下:

在线演示地址如下:
http://demo.jb51.net/js/2015/jquery-email-auto-comp-codes/
具体代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>输入Email相关字符自动提示Email地址</title><script src="jquery-1.6.2.min.js" type="text/javascript"></script><style type="text/css">body{ margin:0px; padding:0px; font-family:Arial; font-size:12px; padding:10px;}#myemail, .newemail, .newemailtitle{cursor:default; line-height:18px;}</style></head><body>Email <input id="me" type="text" value="" style="width:150px; height:18px; line-height:18px; border:1px solid #999;"><script type="text/javascript">var nowid;var totalid;var can1press = false;var emailafter;var emailbefor;$(document).ready(function(){$("#me").focus(function(){ //文本框获得焦点,插入Email提示层 $("#myemail").remove(); $(this).after("<div id="myemail" style="width:170px; height:auto; background:#fff; color:#6B6B6B; position:absolute; left:"+$(this).get(0).offsetLeft+"px; top:"+($(this).get(0).offsetTop+$(this).height()+2)+"px; border:1px solid #ccc;z-index:5px; "></div>"); if($("#myemail").html()){$("#myemail").css("display","block"); $(".newemail").css("width",$("#myemail").width());can1press = true; } else {$("#myemail").css("display","none");can1press = false; } }).keyup(function(){ //文本框输入文字时,显示Email提示层和常用Emailvar press = $("#me").val();if (press!="" || press!=null){var emailtxt = ""; var emailvar = new Array("@163.com","@126.com","@yahoo.com","@qq.com","@sina.com","@gmail.com","@hotmail.com","@foxmail.com");totalid = emailvar.length; var emailmy = "<div class="newemail" style="width:170px; color:#6B6B6B; overflow:hidden;"><font color="#D33022">" + press + "</font></div>"; if(!(isEmail(press))){for(var i=0; i<emailvar.length; i++) { emailtxt = emailtxt + "<div class="newemail" style="width:170px; color:#6B6B6B; overflow:hidden;"><font color="#D33022">" + press + "</font>" + emailvar[i] + "</div>"} } else {emailbefor = press.split("@")[0];emailafter = "@" + press.split("@")[1];for(var i=0; i<emailvar.length; i++) { var theemail = emailvar[i]; if(theemail.indexOf(emailafter) == 0) {emailtxt = emailtxt + "<div class="newemail" style="width:170px; color:#6B6B6B; overflow:hidden;"><font color="#D33022">" + emailbefor + "</font>" + emailvar[i] + "</div>" }} } $("#myemail").html(emailmy+emailtxt); if($("#myemail").html()){ $("#myemail").css("display","block"); $(".newemail").css("width",$("#myemail").width()); can1press = true; } else { $("#myemail").css("display","none"); can1press = false; } beforepress = press;}if (press=="" || press==null){ $("#myemail").html(""); $("#myemail").css("display","none"); } }) $(document).click(function(){ //文本框失焦时删除层 if(can1press){ $("#myemail").remove(); can1press = false; if($("#me").focus()){can1press = false; }} }) $(".newemail").live("mouseover",function(){ //鼠标经过提示Email时,高亮该条Email $(".newemail").css("background","#FFF"); $(this).css("background","#CACACA");$(this).focus();nowid = $(this).index(); }).live("click",function(){ //鼠标点击Email时,文本框内容替换成该条Email,并删除提示层 var newhtml = $(this).html(); newhtml = newhtml.replace(/<.*?>/g,""); $("#me").val(newhtml); $("#myemail").remove(); }) $(document).bind("keydown",function(e) {if(can1press){ switch(e.which){case 38:if (nowid > 0){ $(".newemail").css("background","#FFF"); $(".newemail").eq(nowid).prev().css("background","#CACACA").focus(); nowid = nowid-1;}if(!nowid){ nowid = 0; $(".newemail").css("background","#FFF"); $(".newemail").eq(nowid).css("background","#CACACA"); $(".newemail").eq(nowid).focus();}break; case 40:if (nowid < totalid){ $(".newemail").css("background","#FFF"); $(".newemail").eq(nowid).next().css("background","#CACACA").focus();nowid = nowid+1;}if(!nowid){ nowid = 0; $(".newemail").css("background","#FFF"); $(".newemail").eq(nowid).css("background","#CACACA"); $(".newemail").eq(nowid).focus();}break; case 13:var newhtml = $(".newemail").eq(nowid).html();newhtml = newhtml.replace(/<.*?>/g,"");$("#me").val(newhtml); $("#myemail").remove(); }}})}) //检查email邮箱function isEmail(str){ if(str.indexOf("@") > 0){return true; } else { return false; }}</script>在输入框中输入“qq”、“Sina”、“163”等等可以看到效果</body></html>希望本文所述对大家jQuery程序设计有所帮助。