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js小技巧
2022-07-27 04:32:00 【万事胜意sy】
清空数组

从数组中获取最大值和最小值

空值合并运算符

MDN: 空值合并操作符(??)是一个逻辑操作符,当左侧的操作数为 null 或者 undefined 时,返回其右侧操作数,否则返回左侧操作数。
可选链操作符

MDN: 可选链操作符( ?. )
允许读取位于连接对象链深处的属性的值,而不必明确验证链中的每个引用是否有效。?. 操作符的功能类似于 . 链式操作符,不同之处在于,在引用为空(nullish ) (null 或者 undefined) 的情况下不会引起错误,该表达式短路返回值是 undefined。与函数调用一起使用时,如果给定的函数不存在,则返回 undefined
交换变量的值

保留指定位小数

清空数组

过滤数组中值为 false 的值

从数组中随机选择一个值

删除数组重复的元素

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