如何从选择框(下拉列表)中删除选定的选项(突出显示的选项)?
预期结果:从选择框中进行选择后,单击“删除”按钮即可选择所选选项。
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<select id="drop1" id="choices">
<option value="Red">Red</option>
<option value="Blue">Blue</option>
<option value="Yellow">Yellow</option>
<option value="Green">Green</option>
<option value="Orange">Orange</option>
<option value="Black">Black</option>
</select>
<input type="button" value="Delete" name="delete">
</body>
</html>