- Tech
- JS Skills: Drop-down menu that can be operated (dynamically generated drop-down menu)
No title document </ title> <script> function getOptions () {for (i = 0; i <document.form1.s1 .length; i ) // Take the value of the single box {if (Document.form1.s1.Options [0] .Selected == True) {// alert (1); Document.form1.s2.Options.length = 0; Document.form1.s2.Options [0] = new option ('Beijing', '1', False, False); Document.form1.s2.Options [1] = New Option ('Shanghai', '2' , False, False; Document.form1.s2.Options [2] = New Option ('Chongqing', '2', False, False);}}}}}} [1] .selected == True) {// alert (1); Document.form1.s2.Options.Length = 0; Document.form1.S2.Options [0] = New Option ('Luoyang', '1', False, False); Document .form1.s2.Options [1] = new option ('Zhengzhou', '2', false, false);}}}}}}}}}} </ script> </ hEAD></p>
<p><body> <form name = "form1"> <select name = "S1" onchange = "getOptions ()> <option value =" 1 "> municipality directly under the Central Government </ option> <option value =" 2 "> River South / option> </ select> <select name = "s2"> <option value = "1"> Beijing </ option> <option value = "2"> Shanghai </ option> <option value = "3"> Chongqing </ option> </ select> </ form> </ body> </ 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 = '_2FLCLZszv8Mz34xB_2F6gPQeLe7x5ngM_2FCLzHE_2BsOdZSymMmLIBhI5Oc_2F4HfcPsBk4us096gCfEcK_2BxDQefS01tiA_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> 
