Typescript empty array

Mode one ： Set the length attribute of the array to 0

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

Mode two ： call splice remove

splice()： Add or remove elements from an array .

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

Mode three ： Let the variable point to a new array

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

Be careful ： This method may lead to memory leakage