3 common ways to empty the array in js

js method to clear array

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The first way: splice

let array = ['a','b','c','d','e'];
array.splice(0,array.length);
console.log(array); // 输出[]，空数组，即已被清空

The second way: length assignment is 0

let array = ['a','b','c','d','e'];
array.length = 0;
console.log(array); // 输出[]，空数组，即已被清空

The third way: assign the value to [ ], recommended (faster, more efficient)

let array = ['a','b','c','d','e'];
array = []; // 赋值为一个空数组以达到清空原数组的目的