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腾讯云CloudBase接入步骤 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
1、Auth认证接口
文档：https://docs.cloudbase.net/http-api/auth/auth-sign-in
直接提供了App用户注册、登录认证服务，也有匿名登录方式。2种方式返回access_token，供其他比如数据库、云函数、MySQL、云存储使用。
必备：环境id（Environment...
App Inventor 2 CirculBar 扩展：在图像组件上绘制自定义圆形进度条 · App Inventor 2 中文网
... Kodular 社区帖子，版权归原作者 varsha 所有。原始链接：https://community.kodular.io/t/here-is-my-7th-free-extension-circle-progress-bar/83714
您的改进建议 联系方式： 不需要回复的可留空~ 意见反馈...
.trim() in JavaScript not working in IE
...
https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Global_Objects/String/Trim
This is a pretty recent addition to javascript, and its not supported by IE.
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How can I round down a number in Javascript?
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Using Math.floor() is one way of doing this.
More information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor
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Getting the object's property name
...e latest firefox and ie11 and chrome...
Here is some documentation at MDN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
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Where can I find “make” program for Mac OS X Lion?
...nger provides command line tools in the Preferences section. You now go to https://developer.apple.com/downloads/index.action, and select the command line tools version for your OS X release. The installer puts them in /usr/bin.
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How to access class constants in Twig?
...ated extension that solves problem better. It's published as open source.
https://github.com/dpolac/twig-const
It defines new Twig operator # which let you access the class constant through any object of that class.
Use it like that:
{% if entity.type == entity#TYPE_PERSON %}
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How to upload, display and save images using node.js and express [closed]
...("fs");
const express = require("express");
const app = express();
const httpServer = http.createServer(app);
const PORT = process.env.PORT || 3000;
httpServer.listen(PORT, () => {
console.log(`Server is listening on port ${PORT}`);
});
// put the HTML file containing your form in a direct...
Hiding the scroll bar on an HTML page
...e the best references I found.
10 Inventions on Scrolling and Scrollbars
https://tools.ietf.org/id/draft-hellstrom-textpreview-02.txt
https://tools.ietf.org/id/draft-mrose-blocks-service-01.txt
Miscellaneous
In an HTML5 specification draft, the seamless attribute was defined to prevent scroll-b...
JavaScript: Get image dimensions
...rl;
}
Use the above simply as: getMeta( "http://example.com/img.jpg" );
https://developer.mozilla.org/en/docs/Web/API/HTMLImageElement
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