Run results for: flatten 10 * 24 dimension array with for push vs reduce.concat vs flat() of es2019

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

Browser: Chrome 92

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Tests:

for push
const data = []; for(let i=0;i<10;i++){ data[i]=[]; for(let j=0;j<24;j++){ data[i][j]=i*10+j; } } var list = []; for(var i=0;i<data.length;i=i+1){ for(var j=0;j<data[i].length;j=j+1){ list.push(data[i][j]); } }
reduce.concat
const data = []; for(let i=0;i<10;i++){ data[i]=[]; for(let j=0;j<24;j++){ data[i][j]=i*10+j; } } const list = data.reduce((pre,current) => {pre.push(...current);return pre},[]);
flat() by es2019
const data = []; for(let i=0;i<10;i++){ data[i]=[]; for(let j=0;j<24;j++){ data[i][j]=i*10+j; } } const list = data.flat()