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Mind+ 掌控板、ESP32开发板等硬件如何接入AppInventor？ - 创客硬件开发 - ...
Mind+ 掌控板、ESP32开发板等硬件如何接入AppInventor？
由于硬件板种类繁多，这里仅讨论硬件与AppInventor的通信方式，及使用什么组件。一般不外乎2种方式：
1、蓝牙（经典蓝牙），使用 蓝牙客户端 组件。Mind+ 参考代码如下：
...
How to dynamically insert a tag via jQuery after page load?
I'm having problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load:
...
Is it possible to animate scrollTop with jQuery?
... { scrollTop: "300px" },
{
complete : function(){
alert('this alert will popup twice');
}
}
);
Here's how you can avoid the double callback.
var completeCalled = false;
$("html, body").animate(
{ scrollTop: "300px" },
{
complete : function(){
...
Get difference between 2 dates in JavaScript? [duplicate]
... written as,
const _MS_PER_DAY = 1000 * 60 * 60 * 24;
// a and b are javascript Date objects
function dateDiffInDays(a, b) {
// Discard the time and time-zone information.
const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
const utc2 = Date.UTC(b.getFullYear(), b.getMonth(), ...
Remove Last Comma from a string
Using JavaScript, how can I remove the last comma, but only if the comma is the last character or if there is only white space after the comma? This is my code.
I got a working fiddle . But it has a bug.
...
What is the non-jQuery equivalent of '$(document).ready()'?
...us came here looking for a way to make sure DOM is ready to be used by javascript code.
– abarazal
Dec 4 '19 at 21:18
3
...
C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...下步骤：
1、导入并封装Excel中的接口
Excel作为OLE/COM库插件，定义好了各类交互的接口，这些接口是跨语言的接口。VC可以通过导入这些接口，并通过接口来对Excel的操作。
由于本文只关心对Excel表格中的数据的读取，主要关注...
jQuery checkbox checked state changed event
...5000);
setTimeout(generateRandomArticle.bind(null, ++title), 10000);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<section id="post-list" class="list post-list">
<article class="post">
<h1>Title 1</h1>
<...
JavaScript null check
.... Also, I do not think it's a typo. I've run a find-and-count in the whole script, and it found 10 occurrences, so... I guess the author also needs clarification on this.
– afsantos
May 21 '13 at 14:44
...
How to globally replace a forward slash in a JavaScript string?
How to globally replace a forward slash in a JavaScript string?
10 Answers
10
...