javascript - missing binded value in angularjs -

http://plnkr.co/edit/hlsmpwp6o2ul4shethlr?p=preview

i use push {{tab.tabname}} return blank (line 46) in index.html

this problem: (in app.js, under addtab function)

"name" : capitalisefirstletter(this.newtabname),

should be:

"tabname" : capitalisefirstletter(this.newtabname),