purplepeng

It‘s great. It's works, I think this should be merged by author! @yanndupuy @billxie1988

``` JavaScript function formatNumber(num) { let str = num.toString(); const length = str.length; let value = ''; if (length > 1) { let subStr = str.substr(0, length - 1) let...

``` JavaScript function intersect(...arrays) { let set = new Set(arrays[0]) for(let i=1; i< arrays.length; i++) { let tmpSet = new Set(arrays[i]) set = new Set([...set].filter(x => tmpSet.has(x))) } return [...set]...

日期是已排序的@100pah