// date必填, pattern默认'yyyy-MM-dd HH:mm:ss'function dateFormat (date, pattern) { var week = {'0':'日', '1':'一', '2':'二', '3':'三', '4':'四', '5':'五', '6':'六'}; pattern = pattern == null ? 'yyyy-MM-dd HH:mm:ss' : pattern; var o = { 'M+': date.getMonth() +…