executeScript 跨域问题
本帖最后由 海天鹰 于 2020-5-14 20:14 编辑功能描述：点击工具栏扩展按钮，弹出页面（包含页面和视频2个按钮），点击视频按钮，截取视频图片。
mainifest.json
"browser_action": {
"default_icon": "icon.png",
"default_title": "Tabshot",
"default_popup": "popup.htm"
}
popup.js
document.getElementById('button_video').onclick = function () {
browser.tabs.executeScript({ file: 'capture.js' });
};
capture.js
var videos = document.getElementsByTagName('video');
Error: Permission denied to access property "document" on cross-origin object
可参考https://stackoverflow.com/questions/40980881/cross-origin-issue-with-chrome-extension-when-chrome-tabs-executescript
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