此小案例適合數據較少的相似三級聯動的小效果,省市區三級聯動參見 http://www.javashuo.com/article/p-vjddbmbj-g.htmlhtml
<body> <select name="" id="prov"> <option value="">請選擇省</option> </select> <select name="" id="city"> <option value="">請選擇市</option> <option value="">請先選擇省</option> </select> <select name="" id="county"> <option value="">請選擇縣</option> <option value="">請先選擇市</option> </select> </body> </html> <script src="jquery-1.8.1.min.js"></script> <script> var provArr = ["遼寧","山西","河北"]; // 0 1 2 var cityArr = [["瀋陽","大連","鐵嶺"],["大同","太原"],["邯鄲","石家莊","唐山","雄安"]]; // 0 1 2 0 1 0 1 2 3 var countyArr = [[["s1","s2"],["d1"],["昌圖","蓮花鄉"]],[["t1","t2"],["y1"]],[["h1"],["s1","s2"],["tangshan1"],["xiongan1"]]]; // 00 01 02 10 11 20 21 //頁面加載後 將省的數組信息 添加到頁面上 for(var i = 0; i < provArr.length; i++){ $("#prov").append($("<option value="+i+">"+provArr[i]+"</option>")); } $("#prov").change(function(){//點擊省把市添加進來 $("#city")[0].length = 1; var index = $(this).val();//省的下標 0-1 var cityAry = cityArr[index]; for(var i = 0; i < cityAry.length; i++){ $("#city").append($("<option value="+index+"-"+i+">"+cityAry[i]+"</option>")); } }) $("#city").change(function(){ $("#county")[0].length = 1; var index = $(this).val();//0-0 0-1 0-2 var proIndex = index.split("-")[0];//省的下標 var cityIndex = index.split("-")[1];//城市的下標 var countyAry = countyArr[proIndex][cityIndex]; for(var i = 0; i < countyAry.length; i++){ $("#county").append($("<option>"+countyAry[i]+"</option>")); } }) </script>