js最简洁的时间对象转成时间字符串的方法

getTimestr(val){

               let temp = val.toLocaleString()

               if(temp.match(/[\u4e00-\u9fa5]/g)[0]=="上"){

                    temp = temp.replace(/[\u4e00-\u9fa5]/g,"")

                    return temp.slice(-8,-7)==' '? temp.slice(0,-7)+'0'+temp.slice(-7):temp

               }else{

                   temp = temp.replace(/[\u4e00-\u9fa5]/g,"")

                   let templist = temp.split(' ')

                   let temptime = templist[1].split(':')

                   temptime[0] = parseInt(temptime[0])+12

                   temptime = temptime.join(':')

                   return templist[0]+' '+temptime

               }

            }

使用效果如下：