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[Java教程]jquery 实现邮箱输入自动提示功能:(一)


记得去年做某个项目的时候,用到了邮箱输入自动提示功能,于是网上搜了一下,发现了这个写得不错,现在回想起来,转载一下,方便查阅。

邮箱的广泛使用得益于它的免费,因此很多网站在注册的时候都会直接使用邮箱作为账号名

为了提高用户的体验,很多网站都会实现邮箱输入的自动提示功能。

实现效果如图所示:

核心代码(需要jquery的支持):

(function($){  $.fn.mailAutoComplete = function(options){    var defaults = {      boxClass: "mailListBox", //外部box样式      listClass: "mailListDefault", //默认的列表样式      focusClass: "mailListFocus", //列表选样式中      markCalss: "mailListHlignt", //高亮样式      zIndex: 1,      autoClass: true, //是否使用插件自带class样式      mailArr: ["qq.com","gmail.com","126.com","163.com","hotmail.com","yahoo.com","yahoo.com.cn","live.com","sohu.com","sina.com"], //邮件数组      textHint: false, //文字提示的自动显示与隐藏      hintText: "",      focusColor: "#333"      //blurColor: "#999"    };    var settings = $.extend({}, defaults, options || {});        //页面装载CSS样式    if(settings.autoClass && $("#mailListAppendCss").size() === 0){      $('<style id="mailListAppendCss" type="text/css">.mailListBox{border:1px solid #369; background:#fff; font:12px/20px Arial;}.mailListDefault{padding:0 5px;cursor:pointer;white-space:nowrap;}.mailListFocus{padding:0 5px;cursor:pointer;white-space:nowrap;background:#369;color:white;}.mailListHlignt{color:red;}.mailListFocus .mailListHlignt{color:#fff;}</style>').appendTo($("head"));      }    var cb = settings.boxClass, cl = settings.listClass, cf = settings.focusClass, cm = settings.markCalss; //插件的class变量    var z = settings.zIndex, newArr = mailArr = settings.mailArr, hint = settings.textHint, text = settings.hintText, fc = settings.focusColor, bc = settings.blurColor;    //创建邮件内部列表内容    $.createHtml = function(str, arr, cur){      var mailHtml = "";      if($.isArray(arr)){        $.each(arr, function(i, n){          if(i === cur){            mailHtml += '<div id="mailList_'+i+'"><span >'+str+'</span>@'+arr[i]+'</div>';            }else{            mailHtml += '<div id="mailList_'+i+'"><span >'+str+'</span>@'+arr[i]+'</div>';            }        });      }      return mailHtml;    };    //一些全局变量    var index = -1, s;    $(this).each(function(){      var that = $(this), i = $(".justForJs").size();        if(i > 0){ //只绑定一个文本框         return;        }      var w = that.outerWidth(), h = that.outerHeight(); //获取当前对象(即文本框)的宽高      //样式的初始化      that.wrap('<span ></span>')        .before('<div id="mailListBox_'+i+'" ></div>');      var x = $("#mailListBox_" + i), liveValue; //列表框对象      that.focus(function(){        //父标签的层级        $(this).css("color", fc).parent().css("z-index", z);          //提示文字的显示与隐藏        if(hint && text){          var focus_v = $.trim($(this).val());          if(focus_v === text){            $(this).val("");          }        }        //键盘事件        $(this).keyup(function(e){          s = v = $.trim($(this).val());            if(/@/.test(v)){            s = v.replace(/@.*/, "");          }          if(v.length > 0){            //如果按键是上下键            if(e.keyCode === 38){              //向上              if(index <= 0){                index = newArr.length;                }              index--;            }else if(e.keyCode === 40){              //向下              if(index >= newArr.length - 1){                index = -1;              }              index++;            }else if(e.keyCode === 13){              //回车              if(index > -1 && index < newArr.length){                //如果当前有激活列表                $(this).val($("#mailList_"+index).text());                }            }else{              if(/@/.test(v)){                index = -1;                //获得@后面的值                //s = v.replace(/@.*/, "");                //创建新匹配数组                var site = v.replace(/.*@/, "");                newArr = $.map(mailArr, function(n){                  var reg = new RegExp(site);                    if(reg.test(n)){                    return n;                    }                });              }else{                newArr = mailArr;              }            }            x.html($.createHtml(s, newArr, index)).css("left", 0);            if(e.keyCode === 13){              //回车              if(index > -1 && index < newArr.length){                //如果当前有激活列表                x.css("left", "-6000px");                }            }          }else{            x.css("left", "-6000px");            }        }).blur(function(){          if(hint && text){            var blur_v = $.trim($(this).val());            if(blur_v === ""){              $(this).val(text);            }          }          $(this).css("color", bc).unbind("keyup").parent().css("z-index",0);          x.css("left", "-6000px");                    });          //鼠标经过列表项事件        //鼠标经过        $(".mailHover").live("mouseover", function(){          index = Number($(this).attr("id").split("_")[1]);            liveValue = $("#mailList_"+index).text();          x.children("." + cf).removeClass(cf).addClass(cl);          $(this).addClass(cf).removeClass(cl);        });      });      x.bind("mousedown", function(){        that.val(liveValue);          });    });  };  })(jQuery);

html示例:

<div class="reg_lin1"><div class="lin1_1">常用邮箱:</div><div class="lin1_2"><input type="text" class = "reg_text" id = "email" name = "email"/></div><div class="lin1_3"></div></div>

调用的jquery代码:

$("#email").mailAutoComplete({boxClass: "out_box", //外部box样式listClass: "list_box", //默认的列表样式focusClass: "focus_box", //列表选样式中markCalss: "mark_box", //高亮样式autoClass: false,textHint: true //提示文字自动隐藏});

css,这大家自己修改成自己想要的色调

 <style type="text/css">    .out_box{border:1px solid #ccc; background:#fff; font:12px/20px Tahoma;}    .list_box{border-bottom:1px solid #eee; padding:0 5px; cursor:pointer;}    .focus_box{background:#f0f3f9;}    .mark_box{color:#c00;}  </style>

转载地址:http://www.cnblogs.com/shenliang123/archive/2013/08/19/3267884.html