自己写的 一个选择城市的插件 自豪感横生
html:<input type="text" id="job_post_work_location" autocomplete="off">
调用方法 $.bindCitySuggestion('#job_post_work_location');
源码如下：
(function($){
$.bindCitySuggestion = function(nodeSelector){
var node = $(nodeSelector),
popularCity = ['北京市','上海市','广州市','深圳市','天津市','武汉市','西安市','成都市', '大连市','长春市','沈阳市','南京市','济南市','青岛市','杭州市','苏州市','无锡市','宁波市','重庆市','郑州市','长沙市','福州市','厦门市','哈尔滨市','石家庄市','合肥市','惠州市'],
provinces={"北京": ["北京市"], "天津": ["天津市"],"河北省":["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"],"山西省":["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"],"内蒙古自治区":["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"],"辽宁省":["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"],"吉林省":["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"],"黑龙江省":["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"],"上海":["上海市"],"江苏省":["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"],"浙江省":["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"],"安徽省":["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"],"福建省":["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"],"江西省":["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"],"山东省":["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"],"河南省":["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"],"湖北省":["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"],"湖南省":["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"],"广东省":["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"],"广西壮族自治区":["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"],"海南省":["海口市","三亚市"],"重庆":["重庆市"],"四川省":["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"],"贵州省":["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"],"云南省":["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"],"西藏自治区":["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"],"陕西省":["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"],"甘肃省":["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"],"青海省":["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"],"宁夏回族自治区":["银川市","石嘴山市","吴忠市","固原市","中卫市"],"新疆维吾尔自治区":["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"]},
nodeHeight = node.outerHeight(),
nodeWidth = node.outerWidth(),
x = node.offset().left,
y = node.offset().top+nodeHeight,
suggestionSectionTemplate = '<ul id="workplace_suggestion_section hidden" class="workplace-suggestion-section"></ul>',
suggestionSectionNode = $(suggestionSectionTemplate),
suggestionItemTemplate = '<li class="suggestion-item text-wrap" city-data="{data}"><a class="city-item" href="#">{data}</a></li>';
suggestionSectionNode.css({'left':x+'px','top':y+'px','width':nodeWidth-2-20});
suggestionSectionNode.delegate('.suggestion-item','click',function(e){
e.preventDefault();
var cityData = $(this).data('city');
node.val(cityData);
suggestionSectionNode.hide();
});
function showPopularCity (node,suggestionSectionNode){
suggestionSectionNode.show();
if(suggestionSectionNode.children().length>0){
return;
}
for(i=0;i<popularCity.length;i++){
itemNode = $($.substitute(suggestionItemTemplate,{data:popularCity[i]}));
itemNode.data('city', popularCity[i]);
suggestionSectionNode.append(itemNode);
}
}
function showMatchCity (node,suggestionSectioNode){
var keyword = node.val().trim();
suggestionSectionNode.show();
if(keyword != ''){
suggestionSectionNode.empty();
for (var provinceKey in provinces) {
var province = provinces[provinceKey];
for (var cityKey in province) {
var city = province[cityKey],
index = city.indexOf(keyword);
if(index !== -1){
itemNode = $($.substitute(suggestionItemTemplate,{data:city}));
itemNode.data('city', city);
suggestionSectionNode.append(itemNode);
}
}
}
if(suggestionSectionNode.children().length <=0){
suggestionSectionNode.hide();
}
}else{
suggestionSectionNode.empty();
showPopularCity(node,suggestionSectionNode);
}
}
$('body').append(suggestionSectionNode);
node.click(function(){
showPopularCity(node,suggestionSectionNode);
});
node.bind('textchange', function(e,previousText){
showMatchCity(node,suggestionSectionNode);
});
$(document).mouseup(function(e){
var containers = $('#workplace_suggestion_section, #job_post_work_location');
containers.each(function(){
if($(this).has(e.target).length === 0){
suggestionSectionNode.hide();
}
});
});
}
})(jQuery);
格式对不齐，自己以后参考吧。
里面有几个自己需要注意的地方：
第一个 事件委托
suggestionSectionNode.delegate('.suggestion-item','click',function(e){}};
itemNode.data('city', city);
var cityData = $(this).data('city');
第二个 鼠标点击input以外的地方，下拉列表隐藏
$(document).mouseup(function(e){
var containers = $('#workplace_suggestion_section, #job_post_work_location');
containers.each(function(){
if($(this).has(e.target).length === 0){
suggestionSectionNode.hide();
}
});
第三个 下拉列表可能会跟浏览器本身的提示有冲突 因此 autocomplete="off"