Typescript 清空数组

方式一：将数组的长度属性置0

let array = ["aa","bb","cc","dd"]
console.log(array)
array.length=0
console.log(array)

方式二：调用splice移除

splice()：从数组中添加或删除元素。

let array = ["aa","bb","cc","dd"]
console.log(array)
array.splice(0,array.length)
console.log(array)

方式三：让变量重新指向一个新的数组

let array = ["aa","bb","cc","dd"]
console.log(array)
array = []
console.log(array)

注意：这种方法可能会导致内存泄漏