我有 2 个选择:
<select id="select_1" name="tipo_carta">
<option value="1">90gr</option>
<option value="2">150gr</option>
<option value="3">270gr</option>
</select>
<select id="select_2" name="stampa">
<option value="0">Fronte</option>
<option value="1">Fronte e Retro</option>
</select>
当我选择选项“270gr”(来自 select_1)时,我会禁用选项“Fronte e Retro”(来自 select_2)
我怎样才能做到这一点?