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