javascript - Submit without submit button

Question

I have created dropdown menu "Users", whith 2 options to select

<select name="Users">
        <option>User1</option>
        <option>User2</option>
</select>

I'm stuck with next thing i want to do, which is: -if user1 is selected, another dropdown menu is generated -if user2 is selected, input windows is generated

I would like changes to be made without submit button. Changes should be made with selection on "users" dropdown menu.

Any tips or solution will be greatly appreciated!

Answer 1

你需要 Javascript http://www.w3schools.com/js/default.asp

PHP 是服务器端语言，它仅在用户加载页面时生成代码，而不是在页面加载后生成代码。如果您希望用户在他们的浏览器中获取代码，在他们采取一些行动之后，您需要用户端语言作为 Javascript。

如果您使用一些 Javascript 库作为 jQuery http://www.jquery.com对您来说会更容易。

Answer 2

<select name="Users" onchange="this.form.submit();">
        <option>User1</option>
        <option>User2</option>
</select>

Answer 3

您应该使用 jQuery 事件并使用选择框的更改事件来显示和隐藏您想要的任何 html 元素。