问题
I\'m creating an extremely basic script to assist me in one of my google spreadsheets.
I\'ve successfully got a sidebar showing, with a few buttons (which function). However, whenever I click on one of those buttons, it also opens up a new tab, with a URL something like: \"https://n-lx3mdv5ls3mdgglsq226llilxd2m4owxy72y3fy-1lu-script.googleusercontent.com/userCodeAppPanel?\"
Even if the button is left without any functionality, this still occurs.
Here\'s an example of the html:
<!DOCTYPE html>
<html>
<head>
<base target=\"_top\">
<link rel=\"stylesheet\" href=\"https://ssl.gstatic.com/docs/script/css/add-ons1.css\">
<!-- The CSS package above applies Google styling to buttons and other elements. -->
<style>
</style>
</head>
<body>
<div class=\"sidebar\">
<form>
<div class=\"block\" id=\"buttons\">
<button id=\"unindent\">Unindent</button>
<button id=\"indent\">Indent</button>
<button id=\"asdgdgasg\">Test</button>
</div>
</form>
</div>
</body>
</html>How can I stop this new tab from opening every time?
回答1:
Issue:
<button>type, if not specified defaults totype=submit. So, The form automatically submits the data to the server. This is not preferable in a iframe.
Solution:
- Explicitly specify button type as button.
<button type='button'> - Use
event.preventDefault()to prevent automatic form submission.
References:
- Button#Default
- Sample Form
回答2:
When I saw your issue, I thought that this is due to <form>. So I proposed the following modifications.
Modify
<form>to<form onsubmit="event.preventDefault()">.Modify
<base target="_top">to<base target="_self">.Remove
<base target="_top">.
Note:
- I think that @TheMaster's answer is more useful information.
References:
- Event.preventDefault()
- The Document Base URL element
来源：https://stackoverflow.com/questions/53825069/google-script-sidebar-button-keeps-opening-a-new-tab