1.closures a closure occurs when a function retains access to variables from its outer (enclosing) scope, even after the outer function has finished executing. this means that even though the...
闭包是指函数能够访问外部作用域中的变量,即使外部函数已执行完。原型允许多个对象实例共享方法,减少冗余,提高效率。