如何使所有選定的選項,而不是值,但實際的文本,將顯示在某個地方?獲取下拉列表的價值JavaScript
HTML:
<h1>Made your PC:</h1>
<div>
<label>Processeor: </label><select id="processor" name="processor">
<option class="label" value>Select Processor</option>
<!-- Home Ware -->
<option value="P1">Processor 1</option>
<option value="P2">Processor 2</option>
<option value="P3">Processor 3</option>
<option value="P4">Processor 4</option>
</select>
</div>
<p><strong>Only compatible components will show.</strong></p>
<div>
<label>Select motherboard: </label><select id="motherboard" name="motherboard" class="subcat" disabled="disabled">
<option class="label" value>Select Motherboard</option>
<!-- Home Ware -->
<option rel="P1 P2" value="AS1">ASUS RAMPAGE V EXTREME</option>
<option rel="P2 P3" value="AS2">ASUS ATX DDR3 2600 LGA</option>
<option rel="P1 P3 P4" value="GB1">Gigabyte AM3+</option>
<option rel="P2 P4" value="MSI1">MSI ATX DDR3 2600 LGA 1150</option>
</select>
</div>
<div>
<label>Select RAM: </label> <select disabled="disabled" class="subcat" id="RAM" name="RAM">
<option class="label" value>RAM Memory</option>
<option rel="AS1 AS2 GB1" value="KI1">Kingston Value RAM</option>
<option rel="AS1 AS2 MSI1" value="P5KPL">P5KPL-AM SE</option>
<option rel="MSI1 GB1" value="960GM">960GM-VGS3 FX </option>
</select>
</div>
<div>
<label>Select Video Board: </label> <select disabled="disabled" class="subcat" id="video-card" name="video-card">
<option class="label" value>Video Card</option>
<option rel="MSI1 AS2" value="EVGA8400">EVGA GeForce 8400 GS</option>
<option rel="AS1" value="XFXAMD">XFX AMD Radeon HD 5450</option>
<option rel="MSI1 GB1" value="GTX750Ti">EVGA GeForce GTX 750Ti SC</option>
</select>
</div>
的Javascript:
$(function(){
var $supcat = $("#processor"),
$cat = $("#motherboard"),
$subcat = $(".subcat");
$supcat.on("change",function(){
var _rel = $(this).val();
$cat.find("option").attr("style","");
$cat.val("");
if(!_rel) return $cat.prop("disabled",true);
$cat.find("[rel~='"+_rel+"']").show();
$cat.prop("disabled",false);
});
$cat.on("change",function(){
var _rel = $(this).val();
$subcat.find("option").attr("style","");
$subcat.val("");
if(!_rel) return $subcat.prop("disabled",true);
$subcat.find("[rel~='"+_rel+"']").show();
$subcat.prop("disabled",false);
});
});
我想這是較早公佈這一個代碼,但只顯示一個選擇,採摘之後,有沒有什麼辦法可以顯示所有的選擇和我的隨機文本,如「你的選擇」?:
<script>
function myNewFunction(sel)
{
alert(sel.options[sel.selectedIndex].text);
}
</script>
<select id="box1" onChange="myNewFunction(this);" >
<option value="98">dog</option>
<option value="7122">cat</option>
<option value="142">bird</option>
</select>
不工作怎麼樣?似乎在這裏工作:http://codepen.io/anon/pen/eNdzMb –
是的,我很抱歉,它確實工作,但我需要顯示所有的選擇,它顯示一個,在採摘後。 – Faux