Type Error when I am updating crud table after refreshing the page in AngularJS

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When I am updating the stored data directly after refreshing the page, I am getting some error in console like TypeError: Cannot set property 'myid' of undefined at Object.vm.edit (controller.js:70), table is not updating in that way, but it gets updated if you add a row first and then update it. Can anyone help me how to fix it ? My plunk

Your error says that data doesn't exist on controller, so you just need to initialize vm.data at the top of your controller:

vm.data = {};

Here's plnkr: http://plnkr.co/edit/mnRGSmEk0q9N2dSazEHL?p=preview

Another solution would be to create data object when you're adding it:

vm.data = {
      myid: id,
      fname: vm.arr[i].fname,
      lname: vm.arr[i].lname,
      classs: vm.arr[i].classs,
      age: vm.arr[i].age,
      fees: vm.arr[i].fees,
    };

Here's plnkr: http://plnkr.co/edit/TZmgPz2h02peBYaF0uyV?p=preview