js省市聯動(適合小白)
阿新 • • 發佈：2018-10-27
xhtml ++ length yar ctype doc ava end option
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <script type="text/javascript"> var shengarr = ["湖北省", "湖南省", "廣東省"]; var city = [["武漢", "荊州", "仙桃", "恩施"], ["長沙", "湘潭", "嶽陽", "韶山"], ["東莞", "廣州", "佛山", "汕頭"]]; window.onload=function insertfun() { var vsheng = document.getElementById("sheng"); for (var i = 0; i < shengarr.length; i++) { var opp = document.createElement("option"); opp.innerHTML= shengarr[i]; opp.value = i; vsheng.appendChild(opp); } insertcityfun(); } function insertcityfun() { var id = document.getElementById("sheng").value; var vshi = document.getElementById("shi"); vshi.options.length= 0; var cityarr = city[parseInt(id)]; for (var i = 0; i < cityarr.length; i++) { var cpp = document.createElement("option"); cpp.innerHTML = cityarr[i]; cpp.value = i; vshi.appendChild(cpp); } } </script> </head> <body> <!--省市聯動--> <select id="sheng" onchange="insertcityfun()"> </select> <select id="shi"></select> </body> </html>
js省市聯動(適合小白)