The value of getting a drop-down box in JS is really cost to spend a lot of chapters, compared to the ASP. Net is more trouble more.
list </ title></p>
<p><Meta http-equiv = "content-type" content = "text / html; charSet = GB2312"></p>
<p><Script language = "javascript"></p>
<p><! -</p>
<p>VAR OneCount;</p>
<p>OneCount = 0;</p>
<p>Subcat = new array ();</p>
<p>Subcat [0] = New Array ("Xuhui District", "01", "001");</p>
<p>Subcat [1] = New Array ("Jiading District", "01", "002");</p>
<p>Subcat [2] = New Array ("Huangpu District", "01", "003");</p>
<p>Subcat [3] = New Array ("Nanchang", "02", "004");</p>
<p>Subcat [4] = New Array ("Jiujiang", "02", "005");</p>
<p>Subcat [5] = New Array ("Shangrao City", "02", "006");</p>
<p>OneCount = 6;</p>
<p>Function ChangeLocation (locationID)</p>
<p>{</p>
<p>Document.myform.smallLocation.Length = 0;</p>
<p>Var locationId = locationID;</p>
<p>Var i;</p>
<p>Document.myform.smallLocation.Options [0] = new option ('==== all regions ====', '');</p>
<p>For (i = 0; i <onecount; i )</p>
<p>{</p>
<p>IF (Subcat [I] [1] == locationID)</p>
<p>{</p>
<p>Document.myform.smallLocation.Options [Document.myform.smallLocation.Length]</p>
<p>= New option (SUBCAT [I] [0], SUBCAT [I] [2]);</p>
<p>}</p>
<p>}</p>
<p>}</p>
<p>// -></p>
<p></ Script></p>
<p></ HEAD></p>
<p><Body></p>
<p><Form name = "myform" Method = "post"></p>
<p><Select name = "biglocation"</p>
<p>Onchange = "ChangeLocation"</p>
<p>Document.myform.bigLocation.Options [Document.myform.BigLocation.selectedIndIndex] .value "></p>
<p><Option value = "01" SELECTED> Shanghai </ option></p>
<p><Option value = "02"> Jiangxi </ option></p>
<p></ Select></p>
<p><Select name = "smallLocation"> <option selected value = "> == All regions == </ option></p>
<p></ Select></p>
<p></ Form></p>
<p><Script language = "javascript"></p>
<p><! -</p>
<p>ChangeLocation (Document.Myform.BigLocation.Options [Document.MyForm.bigLocation.SelectedIndex] .value);</p>
<p>// -></p>
<p></ Script></p>
<p></ Body></p>
<p></ Html></p></div><div class="text-center mt-3 text-grey">
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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() {
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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() {
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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);
}
}
});
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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>
