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| const getPaginationPages = (current) => { | |
| const total = 50; | |
| const min = (() => { | |
| if (total <= 5) return 1; | |
| // reached to total pages | |
| if (current + 2 > total) { | |
| return total - 4; | |
| } | |
| return current - 2 > 1 ? current - 2 : 1; | |
| })(); | |
| const arr = Array.from({ length: 5 }, (_, i) => i + min); | |
| console.log(current, arr); | |
| }; | |
| getPaginationPages(1); // result: [ 1, 2, 3, 4, 5 ] | |
| getPaginationPages(2); // result: [ 1, 2, 3, 4, 5 ] | |
| getPaginationPages(3); // result: [ 1, 2, 3, 4, 5 ] | |
| getPaginationPages(4); // result: [ 2, 3, 4, 5, 6 ] | |
| getPaginationPages(5); // result: [ 3, 4, 5, 6, 7 ] | |
| getPaginationPages(24); // result: [ 22, 23, 24, 25, 26 ] | |
| getPaginationPages(25); // result: [ 23, 24, 25, 26, 27 ] | |
| getPaginationPages(26); // result: [ 24, 25, 26, 27, 28 ] | |
| getPaginationPages(46); // result: [ 44, 45, 46, 47, 48 ] | |
| getPaginationPages(47); // result: [ 45, 46, 47, 48, 49 ] | |
| getPaginationPages(48); // result: [ 46, 47, 48, 49, 50 ] | |
| getPaginationPages(49); // result: [ 46, 47, 48, 49, 50 ] | |
| getPaginationPages(50); // result: [ 46, 47, 48, 49, 50 ] |
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