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JS prompt text box email address completion

php中世界最好的语言Original: 2018-04-13 09:44:022055browse

This time I will bring you the JS prompt text box email address completion. What are the precautions for the JS prompt text box email address completion? The following is a practical case, let’s take a look. .

What I want to achieve now is an effect similar to the email prompt box when logging in to NetEase, but I plan to change it slightly here, that is, when entering @, the email prompt list will appear

The principle of implementing prompts is to use regular matching

The code is as follows:

<!doctype html>
<html>
<head>
  <meta charset="utf-8" />
  <title>邮箱补全提示</title>
  <style>
    ul{padding:0px;margin:0px;}
    .login_autoComplete{width:256px;border:1px solid #4190db;position:absolute;background-color:#ffffff;z-index:99;top:109px;left:40px;display:none}
    .login_auto_ul em{font-style:normal}
    .login_auto_ul li.login_auto_title{font-weight:normal;line-height:30px;}
    .login_auto_ul li{line-height:22px;text-indent:5px;font-family:"Arial";cursor:pointer;font-weight:bold;color:#333}
    .login_auto_ul li.hover,.login_auto_ul li.curr{color:#ffffff;background-color:#6eb6fe}
  </style>
  <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
  <script>
    window.email_auto = function(selector){
      var elt = $(selector);
      var strHtml = '<p class="login_autoComplete" id="login_autoComplete">'+
            '    <ul class="login_auto_ul">'+
            '      <li class="login_auto_title">请选择邮箱后缀</li>'+
            '      <li class="hover" hz="@qq.com"></li>'+
            '      <li hz="@163.com"></li>'+
            '      <li hz="@126.com"></li>'+
            '      <li hz="@yahoo.com"></li>'+
            '      <li hz="@sina.com"></li>'+
            '      <li hz="@21cn.com"></li>'+
            '    </ul>'+
            '  </p>';
      var lc = "#login_autoComplete";
      var autoComplete,autoLi;
      if($(lc).length==0){
        $("body").append(strHtml);
        $(lc).data("elt",elt);
        autoComplete = $("#login_autoComplete");
        autoLi = autoComplete.find("li:not(.login_auto_title)");
        autoLi.mouseover(function(){
          $(this).siblings().filter(".hover").removeClass("hover");
          $(this).addClass("hover");
        }).mouseout(function(){
          $(this).removeClass("hover");
        }).mousedown(function(){
          $(lc).data("elt").val($(this).text()).change();
          $(this).parent().parent().hide();
        });
      }else{
        $(lc).data("elt",elt);
        autoComplete = $("#login_autoComplete");
        autoLi = autoComplete.find("li:not(.login_auto_title)");
      }
      $(lc).css("width",elt.outerWidth()-1);
      //用户名补全+翻动
      elt.keyup(function(e){
        if(/13|38|40|116/.test(e.keyCode) || this.value==''){
          return false;
        }
        var username = this.value;
        if(username.indexOf("@")==-1){
          autoComplete.hide();
          return false;
        }
        autoLi.each(function(){
          this.innerHTML = username.replace(/\@+.*/,"")+$(this).attr("hz");
          if(this.innerHTML.indexOf(username)>=0){
            $(this).show();
          }else{
            $(this).hide();
          }
        }).filter(".hover").removeClass("hover");
        autoComplete.show().css({
          left : $(this).offset().left,
          top : $(this).offset().top + $(this).outerHeight(true) - 1
        });
        if(autoLi.filter(":visible").length==0){
          autoComplete.hide();
        }else{
          autoLi.filter(":visible").eq(0).addClass("hover");
        }
      }).change(function(){
        $("#login_autoComplete").hide();
      }).keydown(function(e){
        if(e.keyCode==38){ //上
          autoLi.filter(".hover").prev().not(".login_auto_title").addClass("hover").next().removeClass("hover");
        }else if(e.keyCode==40){ //下
          autoLi.filter(".hover").next().addClass("hover").prev().removeClass("hover");
        }else if(e.keyCode==13){ //Enter
          autoLi.filter(".hover").mousedown();
        }
      }).focus(function(){
        $("#login_autoComplete").data("elt",$(this));
      });
    }
    $(function(){
      email_auto("#xxx");
    });
  </script>
</head>
<body>
脚本之家测试：邮箱补全提示<br/>
<input type="text" id="xxx" style="width:300px"/>
</body>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

JS prompt text box email address completion

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