javascript 为什么任何 html 按钮会导致 aspx 页面中的回发？
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Why any html button cause postback in aspx page?
提问by mimo
I have created .aspx page on my SharePoint site and inserted within the page HTML button.
我在我的 SharePoint 网站上创建了 .aspx 页面并插入到页面 HTML 按钮中。
Example
例子
<PublishingWebControls:editmodepanel PageDisplayMode="Display" runat="server" SuppressTag="True">
...
<button>Click Me!</button>
...
</PublishingWebControls:editmodepanel>
Every time I hit 'Click Me!' the post back occurs. This is not my desired behavior, but I have found a way how to not cause post backs. I added javascript code to onclick property <button onclick='return false;'>Click Me!</button>
每次我点击“点击我！” 回发发生。这不是我想要的行为，但我找到了一种不引起回传的方法。我在 onclick 属性中添加了 javascript 代码<button onclick='return false;'>Click Me!</button>
My question is, why the post back occurs, even if the button does not contain type="submit"property?
我的问题是，即使按钮不包含type="submit"属性，为什么会发生回发？
I checked also master page, which contains <form runat="server">and wraps all the content and there is also no action="page.aspx"property.
我还检查了母版页，其中包含<form runat="server">并包装了所有内容，但也没有任何action="page.aspx"属性。
回答by Dmytro
Check this link, http://www.w3schools.com/tags/tag_button.aspThere is a note on page, which says, that different browsers can use different default type for button, if you don't specify it by yourself. Seems like your browser uses "submit".
检查这个链接，http://www.w3schools.com/tags/tag_button.asp页面上有一个注释，说不同的浏览器可以使用不同的默认按钮类型，如果你不自己指定。似乎您的浏览器使用“提交”。
回答by Aamir
I know this is an old post. @Dmytro 's post leads in the right direction but is not the exact answer. To prevent the postback you need to make use of the type attribute of the button tag. i.e.
我知道这是一个旧帖子。@Dmytro 的帖子指向正确的方向，但不是确切的答案。为了防止回发，您需要使用按钮标签的 type 属性。IE
<button type="button">Click Me!</button>
<button type="button">Click Me!</button>
