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pagination with offset - example: 1...45[6]78...10
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| // example show in string, this script can be adopted to any other output format | |
| const first = 1 // firs item | |
| const current = 5 // current item | |
| const last = 10 // total items | |
| // init offsets | |
| let startLeftOffset = 1 | |
| let endLeftOffset = 1 | |
| let startRightOffset = 1 | |
| let endRightOffset = 1 | |
| // first and last item output always | |
| // startLeftOffset set to second | |
| // endLeftOffset set to current | |
| if(current >= 2 && current <= 4) { | |
| startLeftOffset = first + 1 | |
| endLeftOffset = current | |
| } | |
| // if current more then 4 extract offset from current and save to startLeftOffset | |
| if(current > 4) { | |
| startLeftOffset = current - 2 | |
| endLeftOffset = current | |
| } | |
| let str = '' | |
| if(first !== current) str = first + ' ' | |
| for(let start = startLeftOffset; start < endLeftOffset; start++) { | |
| str += start + ' ' | |
| } | |
| str += '[' + current + '] ' | |
| if(current >= 1 && current <= last - 3) { | |
| startRightOffset = current + 1 | |
| endRightOffset = last - (last - startRightOffset) + 1 | |
| } | |
| if(current > last - 4) { | |
| startRightOffset = current + 1 | |
| endRightOffset = last - 1 | |
| } | |
| for(let start = startRightOffset; start <= endRightOffset; start++) { | |
| str += start + ' ' | |
| } | |
| if(current !== last) str += last | |
| console.log(str) |
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https://jsfiddle.net/belozerskiy/v97mdesr/594/