學習日記【JavaScript】-2020/12/22
阿新 • • 發佈：2020-12-22
教程地址：https://www.bilibili.com/video/BV1ux411d75J?p=121
目前進度：121p/190p
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <script> var arr = ['red','yellow','blue','green']; for(var i = 0;i < arr.length;i++){ console.log(arr[i]); } arr[4]='pink'; console.log(arr); var arr1 = [2,6,1,7,4]; var sum = 0; for(var i = 0;i < arr1.length;i++){ sum += arr1[i]; } var aver= sum/arr1.length; console.log(sum); console.log(aver); var arr2 = [2,0,6,1,77,0,52,0,25,7]; var max = 0 for(var i = 0;i < arr2.length;i++){ if(max < arr2[i]){ max = arr2[i]; } } console.log(max);var newArr = []; var j = 0; for(var i = 0;i < arr2.length;i++){ if(arr2[i] > 10){ newArr[j] = arr2[i]; j++; } }console.log(newArr) var newArr1 = []; var m = 0; for(var i = arr.length - 1;i >= 0;i--){ newArr1[m] = arr[i]; m++; } console.log(newArr1) var arr3 = [5,4,3,2,1]; for(var i = 0;i <= arr3.length - 1;i++){ for(var j = 0;j <= arr3.length - i - 1;j++){ var temp = arr[j]; arr[j] = arr[j + 1]; arr[j + 1] = temp; } }console.log(arr3); </script> </head> <body> </body> </html>