add support for change by keyboard event (#648)
add support for change by keyboard event (#648)


imyzf/element,QingWei-Li/element,Raganof/element,immissile/m-element,JavascriptTips/element,baiyaaaaa/element,immissile/m-element,QingWei-Li/element,ElemeFE/element,reverland/element,jsyczhanghao/element,hetian9288/elui,JavascriptTips/element,karol-f/element,iamnewsea/element-pzx,Kingwl/element,Leopoldthecoder/element-1,Kingwl/element,youngerheart/element,Leopoldthecoder/element-1,renxia/element,huguangju/element,Raganof/element,youngerheart/element,furybean/element,akirak/element,baiyaaaaa/element,imyzf/element,renxia/element,ElemeFE/element,hisland/element,hetian9288/elui,karol-f/element,pengchongfu/element,iamnewsea/element-pzx,furybean/element,engriary/element,akirak/element,engriary/element,huguangju/element,reverland/element,pengchongfu/element,hisland/element