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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
...ID，里面的0xFE**则是私有Characteristic的UUID。下面的Immediate Alert 显示出了名称，代表其不是小米私有的Service，而是官方公开定义的Service。点击进入这个Characteristic，看到它的UUID为2A06。然后我们到蓝牙官网定义的列表Characteristics搜...
When is a language considered a scripting language? [closed]
What makes a language a scripting language? I've heard some people say "when it gets interpreted instead of compiled". That would make PHP (for example) a scripting language. Is that the only criterion? Or are there other criteria?
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Nested JSON objects - do I have to use arrays for everything?
...unction (index1, w) {
$.each(w, function (index2, x) {
alert(x.id);
});
});
});
`
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Get form data in ReactJS
... </form>);
},
submitForm: function(e) {
e.preventDefault();
alert(React.findDOMNode(this.refs.theInput).value);
}
More info can be found in the React docs:
https://facebook.github.io/react/docs/more-about-refs.html#the-ref-string-attribute
For a lot of the reasons described in How ...
Debugging in Clojure? [closed]
...bug-repl that works with swank now: hugoduncan.org/post/2010/… (Spoiler alert: it's awesome)
– user61051
May 11 '10 at 22:36
...
Dynamically load JS inside JS [duplicate]
...to import an external JS file (under an IF condition) inside another javascript file.
13 Answers
...
React JSX: selecting “selected” on selected option
...tState({value: event.target.value});
handleSubmit = (event) => {
alert('Your favorite flavor is: ' + this.state.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}>
<label>
Pick your favorite flavor:
...
this.setState isn't merging states as I would expect
...gt; _.merge({}, previousState, { selected: { name: "Barfood"} }), () => alert(this.state.selected));
I used merge because extend discards the other properties otherwise.
React Immutability example:
import update from "react-addons-update";
this.setState((previousState) => update(previousS...
JavaScript for…in vs for
...hen using this function.
Example:
$(['a','b','c']).each(function() {
alert(this);
});
//Outputs "a" then "b" then "c"
The downside of using this is that if you're doing some non UI logic, your functions will be less portable to other frameworks. The each() function is probably best reserved ...
How to get the source directory of a Bash script from within the script itself?
How do I get the path of the directory in which a Bash script is located, inside that script?
67 Answers
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