js中sort的另类应用

一个数组

var scheduleList = [Object, Object, Object, Object, Object, Object]

Object = {

　　leftNum:36

　　outCallType:"DEPT_COMMON"

　　price:"12.00"

　　regDate:"2017-07-19"

　　regTime:"MORNING"

　　remark:"有"

　　rest:false

　　scheduleId:93700

　　weekDay:"周三"

}

这里有个需求  根据regTime属性按照

E_MORNING  MORNING  NOON  AFTERNOON  EVENING  ALLDAY排序

scheduleList.sort(function(a,b){
    var lt = 0,rt = 0;
    switch (a.regTime) {
        case 'E_MORNING':
            lt = 0;
            break;
        case 'MORNING':
            lt = 1;
            break;
        case 'NOON':
            lt = 2;
            break;
        case 'AFTERNOON':
            lt = 3;
            break;
        case 'EVENING':
            lt = 4;
            break;
        case 'ALLDAY':
            lt = 5;
            break;
    }
    switch (b.regTime) {
        case 'E_MORNING':
            rt = 0;
            break;
        case 'MORNING':
            rt = 1;
            break;
        case 'NOON':
            rt = 2;
            break;
        case 'AFTERNOON':
            rt = 3;
            break;
        case 'EVENING':
            rt = 4;
            break;
        case 'ALLDAY':
            rt = 5;
            break;
    }
    return lt - rt;
});
经过以上操作就可以完成了