[英]How can I use jQuery in html to display the drop down menu correctly
嗨,我是 jQuery 的新手,我正在嘗試將它實現為 HTML 代碼,但它不起作用
它在這里工作https://jsfiddle.net/6trb0whz/
但它在這里不起作用有人可以幫我解決這個問題嗎
<!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>
更新它現在工作一次然后在點擊第三個單選按鈕后消失
你可以在這里試試https://jsfiddle.net/ujvr082w/
這是代碼
<!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>
您可以在創建 html 后放置腳本。 如果你把 html 放在下拉菜單中,它會在下拉菜單中獲取所有值。
一個問題可能是您沒有在</select>
和<body>
之前關閉<script>
標簽。
要關閉
<script>
標記,請使用</script>
另一個問題可能是您忘記刪除<! - -
<! - -
(在兩個中間腳本之間)。
另外,也可以是結尾的<br />
標簽!
希望這解決了您的問題!
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