Web front-end test browser compatibility baby Blessed!

Debugging the front end of a JS effect, in other browsers are normal, my IE11 is normal, but colleagues IE8 under is not normal, so the landlord can only go to find third-party software. Microsoft Expression SuperPreview4 First use, but it can only look at the static page, can not run JS, so only to use IETester (landlord before used ietester, not very good, often crashes). In the IETester under the test, incredibly still normal, landlord moment messy, not only how to start, only to find degrees Niang. In a post to see a good way, really good ah, the landlord before incredibly did not find, stickers as follows:

　　

Under IE press F12, open the Developer tool, and then find the "emulation" option in the menu, where "document Mode" is the version of each IE, because the landlord with the IE11, so the default is IE11, the following is the other version (IE6 was killed because XP was killed?). Choose a different version of IE, the browser will automatically refresh the page, you can see the different IE version of the page effect.

By the landlord test, the known textarea maxlength in HTML5, so IE11 is supported, but in IE8 is not supported, the results of the test is so, it can be sure that this feature is available!

After writing these, the landlord is still chicken move unceasingly Ah, this problem has been troubled for a long time, has not been a very good solution, this is finally solved, to share the next!