Online a lot of netizens asked, on achieving a project in a SELECT list, dynamically updated in another SELECT option. In fact, his principles are simple, only to remember several major points.
The following example gives a complete presentation. Since the view is more likely to understand than I explain, I will post less nonsense, put the code, I hope to help the netizens you need.
new document </ title> <meta name = "generator" content = "editplus"> <meta name = "author" content = "> <meta name =" keywords "content =" "> <Meta name =" description "content ="> <style type = "text / css"> body {font-family: coier new, court; font-size: 8pt; font-family: Courier New, Courier} input {font-size: 8pt; font-family: Courier New, Courier} </ stop> <script language = "javascript"> <! - var name = new array (3); var value = new array ( 3); Name [1] = New Array (ZosataPo1 "," ZosataPO2 "," ZosataPo3 "," Zostapo4 "); Name [2] = New Array (" Reic Yang1 "," Reic Yang2 "," Reic Yang3 " "Reic yang4");</p>
<p>Function change () {SELINDEX = Document.all ("test"). SELECTEDINDEX; if (Document.all ("test"). SELECTEDINDEX == 0) Return;</p>
<p>For (i = document.all ("test"). Options.Length-1; I> -1; i -) {document.all ("test"). Options.remove (i);</p>
<p>For (i = 0; i <name [selindex] .length; i ) {document.all ("test"). Options.add (new option (Name [selindex] [i], "name" i)); }</p>
<p>}</p>
<p>Function Changeex () {</p>
<p>For (i = document.all ("sub"). Options.Length; I> 0; I -) {document.all ("sub"). Options.remove (I-1);}</p>
<p>IF ("Main"). SELECTEDINDEX == 0) {document.all ("sub"). Options.add (new option ("===========", "- 1" ))); RETURN; SELINDEX = Document.all ("main"). SELECTEDINDEX;</p>
<p>For (i = 0; i <name [selindex] .length; i ) {document.all ("sub"). Options.add (Name [selindex] [i], "name" i)); }</p>
<p>}</p>
<p>Function reset () {for (i = document.all ("test"). Options.Length-1; I> -1; i -) {document.all ("test"). Options.Remove (i); }</p>
<p>Document.all ("test"). Options.add (new option ("==========", "- 1"));</p>
<p>Document.all ("test"). Options.add (New Option ("ZostApo", "1"));</p>
<p>Document.all ("Test"). Options.add (New Option ("Reic Yang", "2");</p>
<p>}</p>
<p>Function Display (Object.Options [object.SelectedIndIndex] .text " Object.Options [Object.SelectedIndex] .value);} // -> </ script> </ head></p>
<p><Body bgcolor = "# ffffff"> first sample: <br> <font color = "blue"> All items will change at you selected! </ Font> <br> <select id = "οnchange =" change "οNCHANGE =" ); "> <option value =" - 1 "SELECTED> =========== <option value =" 1 "> zostapo <option value =" 2 "> Reic yang </ select> <input name = "Reset Select" type = "button" value = "Reset Select" οnclick = "reset ();"> <br> <br></p>
<p>Second Sample: <font color = "blue"> You SELECTED ITEM in Main Select! <SELECT> <BR> Main Select: <select id = "main" οnchange = "changeex () ; "> <option value =" - 1 "SELECTED> =========== Option value =" 1 "> zostapo <option value =" 2 "> Reic yang </ select> subsect: </ SELECT> SUB SELECT id = "sub" οnchange = "display (this);"> <option value = "- 1" selected> ========== </ SELECT> <br> <br> </ 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 = 'yeZ4Cj6lrWObeuCUf_2B1C_2FjBd8hKHZKSu2v2HolpKgHFoXJbBQR1BkpPQx_2BWJX_2BYE71qfaXINjNgImXjaUMkI0Q_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>
