jquery realizes the replacement of province and city select drop-down box (sample code)_jquery

Province and city corresponding implementation:

More selective provinces to determine city content

jsp code:

Copy code The code is as follows:

Province
--Please select--
Fujian
Beijing
Shandong
Shanghai

County , city
--Please select--

js code:

Copy code The code is as follows:

function appendShi(shi) {//String splicing, splicing urban area
var fjs='';
for(var i=0;i {
fjs = '' shi[i] '';
}
return fjs;
}
$(function() {
var prince = ['Fujian','Beijing','Shandong','Shanghai'];
var fjs = ['Xiamen','Quanzhou','Fuzhou'];
var bjs = ['Beijing',' Chaoyang District','Haidian District','Pinggu District'];
var shs = ['Huangpu District','Changning District','Baoshan District','Jiading District'];
var sds = [ 'Jinan','Qingdao','Yantai','Rizhao','Laiwu','sss'];

$("select[name='prin']").change(function() {
var shi = $("#sel2");//Get the second select
var prin = $("select[name='prin'][select option:selected]");// Get the value of the selected identity
var newShiSel = $('--Please select--');//
if (prin.val() == 'Fujian'){
newShiSel.append(appendShi(fjs));
}
if (prin.val() == 'Beijing') {
newShiSel.append(appendShi(bjs));
}
if (prin.val() == 'Shanghai') {
newShiSel.append(appendShi(shs));
}
if (prin.val() == 'Shandong') {
newShiSel.append(appendShi(sds));
}
shi.replaceWith(newShiSel);
} );
});