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APP INVENTOR硬件交互学习教程04——蓝牙控制继电器 · App Inventor 2 中文网
...主要是设计一个APP，连接蓝牙模块，通过按钮控制继电器的打开和关闭。
一、硬件部分
二、板子程序
串口接收字符，并输出控制继电器
// 引脚定义
const int ledPin1 = 5;// the number of the LED p...
How to use java.net.URLConnection to fire and handle HTTP requests?
...matching [hostname] found or javax.net.ssl.SSLProtocolException: handshake alert: unrecognized_name on some misconfigured HTTPS sites.
The following one-time-run static initializer in your web scraper class should make HttpsURLConnection more lenient as to those HTTPS sites and thus not throw those ...
Source code highlighting in LaTeX
...lo Thanks. I try to read all mentions of the package (I’ve got a Google alert) but I don’t always succeed. The question you mentioned I’ve actually read (apparently: I upvoted it but I can’t remember) but it’s not at all straightforward. “Ab”using TikZ for this seems like a bad hack ...
jQuery if checkbox is checked
... if ($(this).is(':checked')) {
// Do something...
alert('You can rock now...');
};
});
});
</script>
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get keys of json-object in JavaScript [duplicate]
...onData[obj]){
if(jsonData[obj].hasOwnProperty(prop)){
alert(prop + ':' + jsonData[obj][prop]);
}
}
}
}
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How to do something before on submit? [closed]
... onsubmit-event with jQuery like this:
$('#myForm').submit(function() {
alert('Handler for .submit() called.');
return false;
});
If you return false the form won't be submitted after the function, if you return true or nothing it will submit as usual.
See the jQuery documentation for more i...
jQuery: Count number of list elements?
...
Count number of list elements
alert($("#mylist > li").length);
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Markup XML解析库下载（Markup.h 和 Markup.cpp） - 源码下载 - 清泛网 - 专注C/C++及内核技术
...析库下载（Markup.h 和 Markup.cpp）Markup CMarkup XML解析C++编写的，一个 h，一个 cpp，绿色小巧，直接加入工程源码编译，跨平台。使用方法参见《C++ 读写xml方法整理（持续更新）》Markup h M C++编写的，一个.h，一个.cpp，绿色小巧，...
How to iterate object in JavaScript? [duplicate]
... (i = 0; i < dictionary.data.length; i++) {
d = dictionary.data[i];
alert(d.id + ' ' + d.name);
}
You can also iterate arrays using for..in loops; however, properties added to Array.prototype may show through, and you may not necessarily get array elements in their correct order, or even in...
Create, read, and erase cookies with jQuery [duplicate]
...xample", "foo", { path: '/admin', expires: 7 }); // Sample 3
Get a cookie
alert( Cookies.get("example") );
Delete the cookie
Cookies.remove("example");
Cookies.remove('example', { path: '/admin' }) // Must specify path if used when setting.
...