Forcing a DOM refresh in Internet explorer after javascript

IE often delays changes on the screen until after the Javascript thread completes. They (Microsoft) feel this is an optimization. After all, the sequence
Show mask screen
do some work
Remove mask screen
accomplishes the same (permanent) screen effects as
do some work
Solution
End the thread by yielding control back to IE itself. Do this by calling setTimeout with a 0 ms delay.
Show mask screen
setTimeout to call next function with 0 ms delay
do some work
setTimeout to call next function with 0 ms delay
Remove mask screen

Mozilla (maybe IE as well) will cache/delay executing changes to the DOM which affect display, so that it can calculate all the changes at once instead of repeatedly after each and every statement. To force an update (to force an immediate, synchronous reflow or relayout), your javascript should read a property that's affected by the change, e.g. the location of someSpan and otherSpan.

E文的伤不起啊·

当对dom的操作会影响显示的时候，IE会延迟这些操作（直到这个javascript线程结束）。
比如
function test(){
1、宽度设为100
2、宽度设为50
3、宽度设为70
}
那么，实际上IE执行的只有一个操作【3、宽度设为70】
因为以前的浏览器认为这是一种优化（Firefox貌似现在会分别执行1、2、3）
===========
这样的话，可能得出某些出乎我们意料的结果。
比如上面的test方法，我们本意是希望它宽度依次改变为100,50,70，实际上得出的结果却是一步到位变成70.
================
解决方法1、
1、宽度设为100
setTimeout(..........,0)，用setTimeout延迟0毫秒
2、宽度设为50
setTimeout(..........,0)，用setTimeout延迟0毫秒
3、宽度设为70
==================
解决方法2、
去读取一个会被你的javascript代码改变的属性。
比如上例的test将宽度改变了，那么，你可以尝试去读取这个宽度


中文来了。
不过中文的是被我嚼过的，没味道，剩下渣了

这该死的问题，去你mlgb

楼主强悍, 啃 E 文的味道美味不