get data for ajax post request, fix #17
get data for ajax post request, fix #17

thinkjs/thinkjs,75team/thinkjs,75team/thinkjs,Qihoo360/thinkjs,74sharlock/thinkjs,snadn/thinkjs,lukw00/thinkjs,maxzhang/thinkjs,74sharlock/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,akira-cn/thinkjs,75team/thinkjs,lukw00/thinkjs,akira-cn/thinkjs,maxzhang/thinkjs