擅长:python、mysql、java
<p>你需要把你的<code>select</code>放在<code>form</code>里面。</p>
<pre><code><form name="Item_1" action="results.html" method='POST'>
<select name="Item_1">
<option value="Red">Red</option>
<option value="Green">Green</option>
</select>
<button type="submit">Compare!</button>
</form>
</code></pre>
<p>声明<code>form</code>的更好方法是</p>
<pre><code><form name="Item_1" action="{{ url_for('results') }}" method="POST">
</code></pre>