xshalk的专栏

friendly-date-ranges注意事项变量拼写字符串转数字if语句用{}，避免误写分号理解条件var monthCoin = { "01":"January", "02":"February", "03":"March", "04":"April", "05":"May", "06":"June", "07":"July", "08":"August

【FFC]no-repeats-please有条件的全排列，允许重复，采用递归的方法function notRepeat(arr){if(arr.length === 1){ return true;}for(var i = 0 ; i < arr.length - 1; i++){ if(arr[i] === arr[i+1]) return false;}retur