屏幕锁定后登录时，javascript计时器事件是否批量运行？

Question

I know that timer events will be throttled to execute once in a second when browser tab is not active, likewise is there any scenario timer events will be stored and executed in bulk at once? (eg: when logging in a locked session)

Answer 1

When you block the thread - all timers will get "clamped" in Opera 12.x (Presto) and Firefox:

setTimeout( function () { var x = Date.now(); console.log(x) }, 1000);
setTimeout( function () { var x = Date.now(); console.log(x) }, 9000);
alert('Please wait at least 10 seconds, then press OK');

but will not clamp in IE or Chrome (and, probably, same behavior will be observed in Opera 14+ (Webkit/Blink) and Safari).

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Compare:

Opera 
1371598885051
1371598885051

Firefox
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1371598994798

Chrome
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1371599047371

IE10  
1371598756046 
1371598763050