Agent skill
basis
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/development/basis
SKILL.md
JavaScript小技巧
来源：https://annatarhe.github.io/2016/04/19/hack-js-code.html
类型转换
1. 转为boolean
!!'foo' // true
!!0 //false
2. 转为number
+'45'
+new Date //转为数字
**3. ~~
~是一个按位取非的操作，返回数值的反码，是二进制操作，JavaScript中的number都是double类型的，在位操作的时候会转化为int，两次就还是原来的数
~~3.1415 // 3 等同于parseInt()
~~5.678 //5
IIFE
创建一个函数作用域，防止全局污染，
(function (arg) {
//作用域
});
Closure
闭包：有权访问外部函数作用域的函数，作用是封装，保存变量的状态
var counter = function() {
counter = 0 ;
return function() {
return count++;
}
}
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