最近在工作中需要用到地址选择器，像下面这样的，本想在网上找一个，可是没找到，于是自己写了个jquery插件。

直接上代码吧：

var provinces = { "A": { "安徽":["合肥市","芜湖市","蚌埠市","淮南市","马鞍山市","淮北市","铜陵市","安庆市","黄山市","滁州市","阜阳市","宿州市","巢湖市","六安市","亳州市","池州市","宣城市"] }, "B": { "北京": ["北京市"] }, "C": { "重庆":["重庆市"] }, "F": { "福建":["福州市","厦门市","莆田市","三明市","泉州市","漳州市","南平市","龙岩市","宁德市"] }, "G": { "甘肃":["兰州市","嘉峪关市","金昌市","白银市","天水市","武威市","张掖市","平凉市","酒泉市","庆阳市","定西市","陇南市","临夏回族自治州","甘南藏族自治州"], "广东":["广州市","深圳市","珠海市","汕头市","韶关市","佛山市","江门市","湛江市","茂名市","肇庆市","惠州市","梅州市","汕尾市","河源市","阳江市","清远市","东莞市","中山市","潮州市","揭阳市","云浮市"], "广西":["南宁市","柳州市","桂林市","梧州市","北海市","防城港市","钦州市","贵港市","玉林市","百色市","贺州市","河池市","来宾市","崇左市"], "贵州":["贵阳市","六盘水市","遵义市","安顺市","铜仁地区","黔西南布依族苗族自治州","毕节地区","黔东南苗族侗族自治州","黔南布依族苗族自治州"] }, "H": { "海南":["海口市","三亚市"], "河北":["石家庄市","唐山市","秦皇岛市","邯郸市","邢台市","保定市","张家口市","承德市","沧州市","廊坊市","衡水市"], "河南":["郑州市","开封市","洛阳市","平顶山市","安阳市","鹤壁市","新乡市","焦作市","濮阳市","许昌市","漯河市","三门峡市","南阳市","商丘市","信阳市","周口市","驻马店市"], "黑龙江":["哈尔滨市","齐齐哈尔市","鸡西市","鹤岗市","双鸭山市","大庆市","伊春市","佳木斯市","七台河市","牡丹江市","黑河市","绥化市","大兴安岭地区"], "湖北":["武汉市","黄石市","十堰市","宜昌市","襄樊市","鄂州市","荆门市","孝感市","荆州市","黄冈市","咸宁市","随州市","恩施土家族苗族自治州","神农架"], "湖南":["长沙市","株洲市","湘潭市","衡阳市","邵阳市","岳阳市","常德市","张家界市","益阳市","郴州市","永州市","怀化市","娄底市","湘西土家族苗族自治州"] }, "J": { "吉林":["长春市","吉林市","四平市","辽源市","通化市","白山市","松原市","白城市","延边朝鲜族自治州"], "江苏":["南京市","无锡市","徐州市","常州市","苏州市","南通市","连云港市","淮安市","盐城市","扬州市","镇江市","泰州市","宿迁市"], "江西":["南昌市","景德镇市","萍乡市","九江市","新余市","鹰潭市","赣州市","吉安市","宜春市","抚州市","上饶市"] }, "L": { "辽宁":["沈阳市","大连市","鞍山市","抚顺市","本溪市","丹东市","锦州市","营口市","阜新市","辽阳市","盘锦市","铁岭市","朝阳市","葫芦岛市"] }, "N": { "内蒙古":["呼和浩特市","包头市","乌海市","赤峰市","通辽市","鄂尔多斯市","呼伦贝尔市","巴彦淖尔市","乌兰察布市","兴安盟","锡林郭勒盟","阿拉善盟"], "宁夏":["银川市","石嘴山市","吴忠市","固原市","中卫市"] }, "Q": { "青海":["西宁市","海东地区","海北藏族自治州","黄南藏族自治州","海南藏族自治州","果洛藏族自治州","玉树藏族自治州","海西蒙古族藏族自治州"] }, "S": { "山东":["济南市","青岛市","淄博市","枣庄市","东营市","烟台市","潍坊市","济宁市","泰安市","威海市","日照市","莱芜市","临沂市","德州市","聊城市","滨州市","菏泽市"], "山西":["太原市","大同市","阳泉市","长治市","晋城市","朔州市","晋中市","运城市","忻州市","临汾市","吕梁市"], "陕西":["西安市","铜川市","宝鸡市","咸阳市","渭南市","延安市","汉中市","榆林市","安康市","商洛市"], "上海":["上海市"], "四川":["成都市","自贡市","攀枝花市","泸州市","德阳市","绵阳市","广元市","遂宁市","内江市","乐山市","南充市","眉山市","宜宾市","广安市","达州市","雅安市","巴中市","资阳市","阿坝藏族羌族自治州","甘孜藏族自治州","凉山彝族自治州"] }, "T": { "天津": ["天津市"] }, "X": { "西藏":["拉萨市","昌都地区","山南地区","日喀则地区","那曲地区","阿里地区","林芝地区"], "新疆":["乌鲁木齐市","克拉玛依市","吐鲁番地区","哈密地区","昌吉回族自治州","博尔塔拉蒙古自治州","巴音郭楞蒙古自治州","阿克苏地区","克孜勒苏柯尔克孜自治州","喀什地区","和田地区","伊犁哈萨克自治州","塔城地区","阿勒泰地区","石河子市","阿拉尔市","图木舒克市","五家渠市"] }, "Y": { "云南":["昆明市","曲靖市","玉溪市","保山市","昭通市","丽江市","思茅市","临沧市","楚雄彝族自治州","红河哈尼族彝族自治州","文山壮族苗族自治州","西双版纳傣族自治州","大理白族自治州","德宏傣族景颇族自治州","怒江傈僳族自治州","迪庆藏族自治州"] }, "Z": { "浙江":["杭州市","宁波市","温州市","嘉兴市","湖州市","绍兴市","金华市","衢州市","舟山市","台州市","丽水市"] } }; (function ($, win, doc) { var CityPicker = function (el, options) { this.el = $(el); this.options = options; this.provinces = provinces; this.pro = null; this.city = null; this.elType = this.el.is('input'); this.init(); }; var p = CityPicker.prototype; p.init = function () { this.initEvent(); this.preventPopKeyboard(); }; p.preventPopKeyboard = function () { if (this.elType) { this.el.prop("readonly", true); } }; p.initEvent = function () { this.el.on("focus", function (e) { var pickerBox = $(".picker-box"); if (pickerBox[0]) { pickerBox.show(); } else { this.create(); } }.bind(this)); }; p.create = function () { this.createCityPickerBox(); this.createProList(); this.proClick(); this.createNavBar(); this.navEvent(); }; p.createCityPickerBox = function () { var proBox = ""; $("body").append(proBox); }; p.createProList = function () { var provinces = this.provinces; var proBox; var dl = ""; for (var letterKey in provinces) { var val = provinces[letterKey]; if (provinces.hasOwnProperty(letterKey)) { var dt = "" + letterKey + ""; var dd = ""; for (var proKey in val) { if (val.hasOwnProperty(proKey)) { dd += "" + proKey + ""; } } dl += "" + dt + dd + ""; } } proBox = "" + dl + ""; $(".picker-box").append(proBox); }; p.createCityList = function (letter, pro) { var cities = this.provinces[letter][pro]; var ul, li = ""; cities.forEach(function (city, i) { li += "" + city + ""; }); ul = "" + li + ""; $(".picker-box").find(".city-picker").remove().end().append(ul); this.cityClick(); }; p.proClick = function () { var that = this; $(".pro-picker").on("click", function (e) { var target = e.target; if ($(target).is("dd")) { that.pro = $(target).html(); var letter = $(target).data("letter"); that.createCityList(letter, that.pro); $(this).hide(); } }); }; p.cityClick = function () { var that = this; $(".city-picker").on("click", function (e) { var target = e.target; if ($(target).is("li")) { that.city = $(target).html(); if (that.elType) { that.el.val(that.pro + "-" + that.city); } else { that.el.html(that.pro + "-" + that.city); } $(".picker-box").hide(); $(".pro-picker").show(); $(this).hide(); } }); }; p.createNavBar = function () { var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; var arr = str.split(""); var a = ""; arr.forEach(function (item, i) { a += '' + item + ''; }); var div = '

' + a + '

'; $(".picker-box").append(div); }; p.navEvent = function () { var that = this; var navBar = $(".navbar"); var width = navBar.find("a").width(); var height = navBar.find("a").height(); navBar.on("touchstart", function (e) { $(this).addClass("active"); that.createLetterPrompt($(e.target).html()); }); navBar.on("touchmove", function (e) { e.preventDefault(); var touch = e.originalEvent.touches[0]; var pos = {"x": touch.pageX, "y": touch.pageY}; var x = pos.x, y = pos.y; $(this).find("a").each(function (i, item) { var offset = $(item).offset(); var left = offset.left, top = offset.top; if (x > left && x < (left + width) && y > top && y < (top + height)) { location.href = item.href; that.changeLetter($(item).html()); } }); }); navBar.on("touchend", function () { $(this).removeClass("active"); $(".prompt").hide(); }) }; p.createLetterPrompt = function (letter) { var prompt = $(".prompt"); if (prompt[0]) { prompt.show(); } else { var span = "" + letter + ""; $(".picker-box").append(span); } }; p.changeLetter = function (letter) { var prompt = $(".prompt"); prompt.html(letter); }; $.fn.CityPicker = function (options) { return new CityPicker(this, options); } }(window.jQuery, window, document));

代码很简单。这边需要提到的一段代码是：

navBar.on("touchmove", function (e) { e.preventDefault(); var touch = e.originalEvent.touches[0]; var pos = {"x": touch.pageX, "y": touch.pageY}; var x = pos.x, y = pos.y; $(this).find("a").each(function (i, item) { var offset = $(item).offset(); var left = offset.left, top = offset.top; if (x > left && x < (left + width) && y > top && y < (top + height)) { location.href = item.href; that.changeLetter($(item).html()); } }); });

这段是通过字母导航省份的代码。当手指在字母上滑动时，touchmove事件并不能确定当前的字母是哪个，因为e.target永远是touchstart时的那个字母。所以我不得不通过坐标来判断手指位于哪个字母上，这样就导致一个问题，每次滑动都必须遍历26个字母的坐标，这样效率是非常低的，但是目前我也没有好的办法。

该插件的使用方法非常简单：

// html代码 // js代码 $(".city").CityPicker();

demo： /js/2016/cityPicker-master/test.html。最好用手机浏览器或者chrome模拟器打开。

如果有需要的朋友，可以从/jiaoben/430774.html 下载。

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