- Tech
- In JSP, use JS generation dynamic database related secondary linkage pull-up boxes
Backstage Product Add </ Title></p>
<p><meta http-equiv = "content-type" content = "text / html; charSet = GB2312"></p>
<p><link href = "../ inc / style.css" Rel = "stylesheet" type = "text / css"></p>
<p><script language = "javascript"></p>
<p>VAR OneCount;</p>
<p>OneCount = 0;</p>
<p>Subcat = new array ();</p>
<p><%</p>
<p>INT count = 0;</p>
<p>RS = conn.executeQuery ("Select * from ego_smallsort order by sid"; // read data</p>
<p>While (rs.next ())</p>
<p>{</p>
<p>String sname = new string (rs.getstring ("sname"). GetBytes ("GBK"), "ISO8859_1"); // Convert Character Type</p>
<p>%></p>
<p>Subcat [<% = count%>] = new array ("<% = sname%>", "<% = rs.get (" BID ")%>", "<% = rs.Getint (" sID ") %> "); // Generate an array</p>
<p><%</p>
<p>Count = count 1;</p>
<p>}</p>
<p>%></p>
<p>OneCount = <% = count%>;</p>
<p>Function ChangeLocation (ID)</p>
<p>{</p>
<p>Document.form1.smallsortselect.Length = 0;</p>
<p>VAR ID = ID;</p>
<p>Var i;</p>
<p>Document.form1.smallsortselect.Options [0] = new option ('Select Secondary Classification', '');</p>
<p>For (i = 0; i <onecount; i )</p>
<p>{</p>
<p>IF (Subcat [i] [1] == ID)</p>
<p>{</p>
<p>Document.form1.smallsortselect.Options [Document.form1.smallsortselect.Length] = new option (Subcat [i] [0], Subcat [i] [2]);</p>
<p>}</p>
<p>}</p>
<p>}</p>
<p></ script></p>
<p></ hEAD></p>
<p><body bgcolor = "# ffffff"></p>
<p><form name = "form1" method = "post" action = ">></p>
<p><table width = "500" border = "0" cellspacing = "0" cellpadding = "0" align = "center"></p>
<p><tr></p>
<p><td width = "180" Height = "20" align = "right"> Select a class class: </ td></p>
<p><td width = "320"> <select name = "BigsortSelect" onchange = "ChangeLocation (Document.form1.bigsortSelect.Options [Document.form1.bigsortselect.SelectedIndex] .value)" Size = "1"></p>
<p><option value = "2"> Please select 1 classification </ option></p>
<p><%</p>
<p>RS = conn.executeQuery ("Select * from ego_bigsort order by bid");</p>
<p>While (rs.next ())</p>
<p>{</p>
<p>String BName = New String (rs.getstring ("BName"). GetBytes ("GBK"), "ISO8859_1");</p>
<p>System.out.println (BNAME);</p>
<p>%></p>
<p><option value = "<% = rs.Getint (" BID ")%>> <% = BNAME%> </ option></p>
<p><%</p>
<p>}</p>
<p>%></p>
<p></ select> <br></p>
<p></ td></p>
<p></ TR></p>
<p><br></p>
<p><tr></p>
<p><TD Height = "20" Align = "Right"> Select Secondary Category: </ TD></p>
<p><TD></p>
<p><select name = "smallsortselect"></p>
<p><option value = "" SELECTED> Please select Secondary Classification </ option></p>
<p></ select></p>
<p></ td></p>
<p></ TR></p>
<p><tr></p>
<p><td height = "20" colSpan = "2" align = "center"> <input type = "submit" name = "submit" value = "submit"> </ td></p>
<p></ TR></p>
<p><script language = "javascript"></p>
<p>ChangeLocation (Document.form1.bigSortSelect.Options [Document.form1.bigSortSelect.Selected ".Value); // Pass the value of the level classification to the ChangeLocation () function to generate a list of secondary classification</p>
<p></ script></p>
<p></ table></p>
<p></ form></p>
<p></ body></p>
<p></ html></p></div><div class="text-center mt-3 text-grey">
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var forum_url = 'list-1.html';
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body.on('submit', '#form', function() {
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jsubmit.button('loading');
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jsubmit.button('reset');
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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();
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jimg.css('height', 'auto');
jimg.css('cursor', 'pointer');
jimg.on('click', function() {
});
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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> 
