Jquery实现Email邮箱地址自动补全代码

发布时间:2020-07-26编辑:脚本学堂
本文介绍下,用Jquery实现Email邮箱地址自动初全的实现代码,有需要的朋友,可以参考下。

说明:需要引入外部jquery文件,本例中用到的是Jquery1.4.2.js。

代码如下:
 

复制代码 代码示例:
<!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字符自动提示Email地址_www.jb200.com</title>
<script src="/js/jquery.1.4.2.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Email
  var 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>
试试输入“qq”、“Sina”、“163”等,会看到什么样的效果?!
</body>
</html>