[英]How can I use jQuery in html to display the drop down menu correctly
嗨,我是 jQuery 的新手,我正在尝试将它实现为 HTML 代码,但它不起作用
它在这里工作https://jsfiddle.net/6trb0whz/
但它在这里不起作用有人可以帮我解决这个问题吗
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script src="https://code.jquery.com/jquery-latest.min.js"></script>
<script>
var options = $("#DropDownList2").html();
$('#DropDownList2 :not([value^="App"])').remove();
$('input:radio').change(function(e) {
var text = $(this).val();
$("#DropDownList2").html(options);
$('#DropDownList2 :not([value^="' + text.substr(0, 3) + '"])').remove();
});
</script>
<input type="radio" name="test" value="Orange" /> Burger Garage
<input type="radio" name="test" value="Burger" /> Hardee's
<input type="radio" name="test" checked="checked" value="Apple" /> Burger Factory & More
<br>
<select ID="DropDownList2" Height="18px" Width="187px">
<option Value="Apple_Style_1">Turbo Chicken</option>
<option Value="Apple_Style_2">Twin Turbo Chicken</option>
<option Value="Apple_Style_3">Garage Burger</option>
<option Value="Burger_Style_1">Chicken Fille</option>
<option Value="Burger_Style_2">Grilled Chicken Fillet</option>
<option Value="Burger_Style_3">Jalapeno Chicken</option>
<option Value="Orange_Style_1">Original Burger</option>
<option Value="Orange_Style_2">Twin Turbo Chicken</option>
<option Value="Orange_Style_3">Shuwa Burger</option>
</select>
</body>
</html>
更新它现在工作一次然后在点击第三个单选按钮后消失
你可以在这里试试https://jsfiddle.net/ujvr082w/
这是代码
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<input type="radio" name="test" value="Orange" /> Burger Garage
<input type="radio" name="test" value="Burger" /> Hardee's
<input type="radio" name="test" checked="checked" value="Apple" /> Burger Factory & More
<br>
<script src="https://code.jquery.com/jquery-latest.min.js"></script>
<script>
var options = $("#DropDownList2").html();
$('#DropDownList2 :not([value^="App"])').remove();
$('input:radio').change(function(e) {
var text = $(this).val();
$("#DropDownList2").html(options);
$('#DropDownList2 :not([value^="' + text.substr(0, 3) + '"])').remove();});
</script>
<select ID="DropDownList2" Height="18px" Width="187px">
<option Value="Apple_Style_1">Turbo Chicken</option>
<option Value="Apple_Style_2">Twin Turbo Chicken</option>
<option Value="Apple_Style_3">Garage Burger</option>
<option Value="Burger_Style_1">Chicken Fille</option>
<option Value="Burger_Style_2">Grilled Chicken Fillet</option>
<option Value="Burger_Style_3">Jalapeno Chicken</option>
<option Value="Orange_Style_1">Original Burger</option>
<option Value="Orange_Style_2">Twin Turbo Chicken</option>
<option Value="Orange_Style_3">Shuwa Burger</option>
</select>
</body>
</html>
<!DOCTYPE html> <html> <head> </head> <body> <label><input type="radio" name="test" value="Orange" /> Burger Garage</label> <label><input type="radio" name="test" value="Burger" /> Hardee's</label> <label> <input type="radio" name="test" checked="checked" value="Apple" /> Burger Factory & More</label> <br> <select ID="DropDownList2" Height="18px" Width="187px"> <option Value="Apple_Style_1">Turbo Chicken</option> <option Value="Apple_Style_2">Twin Turbo Chicken</option> <option Value="Apple_Style_3">Garage Burger</option> <option Value="Burger_Style_1">Chicken Fille</option> <option Value="Burger_Style_2">Grilled Chicken Fillet</option> <option Value="Burger_Style_3">Jalapeno Chicken</option> <option Value="Orange_Style_1">Original Burger</option> <option Value="Orange_Style_2">Twin Turbo Chicken</option> <option Value="Orange_Style_3">Shuwa Burger</option> </select> <script src="https://code.jquery.com/jquery-latest.min.js"></script> <script> var options = $("#DropDownList2").html(); $('#DropDownList2 :not([value^="App"])').remove(); $('input:radio').change(function(e) { var text = $(this).val(); $("#DropDownList2").html(options); $('#DropDownList2 :not([value^="' + text.substr(0, 3) + '"])').remove();}); </script> </body> </html>
您可以在创建 html 后放置脚本。 如果你把 html 放在下拉菜单中,它会在下拉菜单中获取所有值。
一个问题可能是您没有在</select>
和<body>
之前关闭<script>
标签。
要关闭
<script>
标记,请使用</script>
另一个问题可能是您忘记删除<! - -
<! - -
(在两个中间脚本之间)。
另外,也可以是结尾的<br />
标签!
希望这解决了您的问题!
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