js switch 用法

//获取星期
//例子1
var day=new Date().getDay();
switch (day)
{
    case :
      x="Today it's Saturday";
      break;
    case :
      x="Today it's Sunday";
      break;
    default:
      x="Looking forward to the Weekend";
}

输出

"Looking forward to the Weekend"

//例子2
var day=new Date().getDay();
switch (day)
{
    case :
      x="Today it's Sunday";
      break;
    case :
      x="Today it's Monday";
      break;
    case :
      x="Today it's Tuesday";
      break;
    case :
      x="Today it's Wednesday";
      break;
    case :
      x="Today it's Thursday";
      break;
    case :
      x="Today it's Friday";
      break;
    case :
      x="Today it's Saturday";
      break;
}

输出

"Today it's Wednesday"

//例子3
switch(t.update_state)
{
    case :
        $('#h-progress-status .value').text("HdwUpdateRestarting")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateRestartSuccess")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateRestartFailure")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashWiping")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashWipeSuccess")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashWipeFailure")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashReprogramming")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashReprogramSuccess")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateFlashReprogramFailure")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateAppStarting")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateAppStartSuccess")
        break;
    case :
        $('#h-progress-status .value').text("HdwUpdateAppStartFailure")
        break;
    default:
      console.log("something else!")
}