需求:
對地區進行選擇,選擇相應的省,就會出現相應范圍的市,然后出現相應的范圍的縣區;如果縣不存在,就不現實,自我要求是自己寫個簡單的插件,方便以后調用;
邏輯:
1.通過div的類名來獲取,其下的select標簽;
2.通過聲明臨時變量,用來保存option內容,并通過$.each()來遍歷json然后添加到select中;
3.如果某個市沒有縣,就先判斷json中有沒記錄,如果沒有就不現實,有就繼續執行下面代碼;
4.用change事件來控制三個selet之間的聯系;
5.通過Ajax $.getJSON,來觸發省份事件,然后通過省份select的改變,來觸發市區,以此類推;
實現:
json數據
[{"p":"江西省","c":[{"ct":"南昌市","d":[{"dt":"西湖區"},{"dt":"東湖區"},{"dt":"高新區"}]},{"ct":"贛州市","d":[{"dt":"瑞金縣"},{"dt":"南豐縣"},{"dt":"全南縣"}]}]},{"p":"北京","c":[{"ct":"東城區"},{"ct":"西城區"}]},{"p":"河北省","c":[{"ct":"石家莊","d":[{"dt":"長安區"},{"dt":"橋東區"},{"dt":"橋西區"}]},{"ct":"唐山市","d":[{"dt":"灤南縣"},{"dt":"樂亭縣"},{"dt":"遷西縣"}]}]}]html代碼
<html><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,Chrome=1"><title>select</title><meta name="descrWords" content=""><script type="text/javascript" src="jquery.js"></script><script src = "areaSelect.js"></script><link href="" rel="stylesheet"><style> .sel{ width:300px; margin:0 auto; }</style></head><body> <div class="sel"> <select class="
jquery插件
/** * * @authors Your Name (you@example.org) * @date 2015-09-13 01:54:25 * @version $Id$ */(function($){ $.fn.areaSelect = function(options){ var settings = $.extend({ "jsonUrl":"json" },options); return this.each(function(){ var url = options.jsonUrl; var addJson; var tHtml = ""; var op = $(this).find(".province"); var oc = $(this).find(".city"); var od = $(this).find(".district"); //初始化 var province = function(){ $.each(addJson,function(i,province){ tHtml += "<option value = '"+province.p+"'>"+province.p+"</option>"; }); op.html(tHtml); city(); } var city = function(){ var tHtml=""; var n = op.get(0).selectedIndex; $.each(addJson[n].c,function(i,city){ tHtml += "<option value='"+city.ct+"''>"+city.ct+"</option>"; }); oc.html(tHtml); district(); } var district = function(){ var tHtml=""; var n = op.get(0).selectedIndex; var m = oc.get(0).selectedIndex; if(typeof (addJson[n].c[m].d) == "undefined"){ od.CSS("display","none") }else{ od.css("display","inline"); $.each(addJson[n].c[m].d,function(i,district){ tHtml += "<option value='"+district.dt+"'>"+district.dt+"</option>" }); od.html(tHtml); } } op.change(function(){ city(); }) oc.change(function(){ district() }); $.getJSON(settings.jsonUrl,function(data){ addJson = data; province() }) }) }})(jQuery)轉載自:http://www.cnblogs.com/afuge/archive/2013/06/08/3127172.html 有修改!
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