add JavaScript, Node.js tag
add JavaScript, Node.js tag

dengjun824/angularjs,luis1232005/jsgen,xiaoking/jsgen,CN-Sean/jsgen,xiaxuewuhen001/jsgen,caiyongmin/jsgen,13428282016/jsgen,caiyongmin/jsgen,xiaxuewuhen001/jsgen,cnbin/jsgen,zensh/jsgen,CN-Sean/jsgen,huihuiyihan/jsgen,Jocs/jsgen,kylezhang/jsgen,Jocs/jsgen,ixiongdi/bbs,zensh/jsgen,luis1232005/jsgen,xiaoking/jsgen,kylezhang/jsgen,huihuiyihan/jsgen,13428282016/jsgen,cnbin/jsgen