js ArrayBufferView & TypeArray All In One

// ✅ > 100000
2**64;
18446744073709552000

// ✅ > 100000
2**32;
4294967296

// ❌ 太小了 < 100000
2**16;
65536

// ❌ 太小了 < 100000
2**8;
256

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray

https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/TypedArray

Uint8Array

js no for 100 array

const arr = new Uint8Array(100).map((item, i) => i);
 

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array

Uint32Array

js 数组里面有10万个数据，取第 1 个元素和第 10 万个元素的时间相差多少?

const arr = (new Uint32Array(100000)).map((item, i) => i +  1);

function testPerformance(arr, i) {
  let startTime = performance.now();
  console.log(`arr[i], i =`, arr[i], i);
  let endTime = performance.now();
  console.log(`

标签：Web,arr,console,ArrayBufferView,js,Objects,https,TypeArray,developer	

From： https://www.cnblogs.com/xgqfrms/p/16721287.html