1. Database:
Table 1: Region (ID, province)
Table 2: City (ID, city, province)
II. Code implementation:
<%
Function dbcombox ()
DIM RS, SQL, MSG
SQL = "SELECT * AROTION"
SET RS = Conn.execute (SQL)
While Not Rs.eof
MSG = msg & "
rs.movenext
Wend
Rs.close
SET RS = Nothing
DBCOMBOX = MSG
END FUNCTION
%>
Member Login </ Title></p>
<p></ hEAD></p>
<p><body></p>
<p><script language = "javascript"></p>
<p>CITYS = New Array ();</p>
<p><%</p>
<p>DIM RS, SQL, I</p>
<p>SQL = "SELECT * from city"</p>
<p>SET RS = Conn.execute (SQL)</p>
<p>i = 0</p>
<p>While Not Rs.eof</p>
<p>%></p>
<p>CITYS [<% = I%>] = new array ("<% = rs (" province ")%>", "<% = RS (" city ");"</p>
<p><%</p>
<p>i = i 1</p>
<p>rs.movenext</p>
<p>Wend</p>
<p>Rs.close</p>
<p>SET RS = Nothing</p>
<p>%></p>
<p>Function Changeselect (SelValue) {</p>
<p>Var sleelue = sleelue;</p>
<p>Var i;</p>
<p>Document.form1.city.length = 0;</p>
<p>Document.form1.city.Options [document.form1.city.length] = new option ("Please select", "");</p>
<p>For (i = 0; i <citys.length; i ) {</p>
<p>IF (Citys [i] [0] == SELVALUE) {</p>
<p>Document.form1.city.Options [document.form1.city .length] = new option (Citys [i] [1], citys [i] [1]);</p>
<p>}</p>
<p>}</p>
<p>}</p>
<p>Document.form1.city.Options [document.form1.city.length] = new option ("Please select", "");</p>
<p></ script> <div align = "center"></p>
<p><form method = "post" action = "forum.asp" Name = "form1"></p>
<p><table border = "0" Cellpadding = "0" style = "border-collapse: collapse" width = "100%" id = "table1" height = "59"></p>
<p><tr></p>
<p><td width = "67" height = "30" bgcolor = "# d4d0c8"> <b> <font size = "2"> area </ font> </ b> </ td></p>
<p><TD Height = "30" BGColor = "# D4D0C8"> <select size = "1" name = "=" = "change" = "ChangeSelect (Document.form1.Region.Options [Document.form1.Region.Selected" "></p>
<p><% = Dbcombox ()%> </ select> </ td></p>
<p></ TR></p>
<p><tr></p>
<p><td width = "67" height = "30"> <b> <font size = "2"> cities </ font> </ b> </ td></p>
<p><TD Height = "30"> <select size = "1" name = "city"> </ select> </ td></p>
<p></ TR></p>
<p></ TABLE></p>
<p></ form></p>
<p></ div></p>
<p></ body></p>
<p></ html></p></div><div class="text-center mt-3 text-grey">
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var debug = DEBUG = 0;
var url_rewrite_on = 1;
var url_path = './';
var forumarr = {"1":"Tech"};
var fid = 1;
var uid = 0;
var gid = 0;
xn.options.water_image_url = 'view/img/water-small.png';
</script><script src="view/js/wellcms.js?2.2.0"></script><a class="scroll-to-top rounded" href="javascript:void(0);"><i class="icon-angle-up"></i></a><a class="scroll-to-bottom rounded" href="javascript:void(0);" style="display: inline;"><i class="icon-angle-down"></i></a></body></html><script>
var forum_url = 'list-1.html';
var safe_token = 'mxQOI8_2BlzdYFNiFF7mok3ojaRAkpdHk2Hhv_2F9RaTTWjoadiHO_2BtZSaWgzevuzA4xK5NRDLaLKOcC2G_2FKPkbFgg_3D_3D';
var body = $('body');
body.on('submit', '#form', function() {
var jthis = $(this);
var jsubmit = jthis.find('#submit');
jthis.reset();
jsubmit.button('loading');
var postdata = jthis.serializeObject();
$.xpost(jthis.attr('action'), postdata, function(code, message) {
if(code == 0) {
location.reload();
} else {
$.alert(message);
jsubmit.button('reset');
}
});
return false;
});
function resize_image() {
var jmessagelist = $('div.message');
var first_width = jmessagelist.width();
jmessagelist.each(function() {
var jdiv = $(this);
var maxwidth = jdiv.attr('isfirst') ? first_width : jdiv.width();
var jmessage_width = Math.min(jdiv.width(), maxwidth);
jdiv.find('img, embed, iframe, video').each(function() {
var jimg = $(this);
var img_width = this.org_width;
var img_height = this.org_height;
if(!img_width) {
var img_width = jimg.attr('width');
var img_height = jimg.attr('height');
this.org_width = img_width;
this.org_height = img_height;
}
if(img_width > jmessage_width) {
if(this.tagName == 'IMG') {
jimg.width(jmessage_width);
jimg.css('height', 'auto');
jimg.css('cursor', 'pointer');
jimg.on('click', function() {
});
} else {
jimg.width(jmessage_width);
var height = (img_height / img_width) * jimg.width();
jimg.height(height);
}
}
});
});
}
function resize_table() {
$('div.message').each(function() {
var jdiv = $(this);
jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>');
});
}
$(function() {
resize_image();
resize_table();
$(window).on('resize', resize_image);
});
var jmessage = $('#message');
jmessage.on('focus', function() {if(jmessage.t) { clearTimeout(jmessage.t); jmessage.t = null; } jmessage.css('height', '6rem'); });
jmessage.on('blur', function() {jmessage.t = setTimeout(function() { jmessage.css('height', '2.5rem');}, 1000); });
$('#nav li[data-active="fid-1"]').addClass('active');
</script>
