Accessing an element in javascript

Question

I have Bank account program in which I am trying to delete an account

var bankAccount = new Array();
var bankAccountAll = new Array();

function DeleteAccount()
{
   var userno = document.getElementById("userno").value;
   bankAccount = JSON.parse(sessionStorage.getItem('user');
   for(var i=0;i<bankAccount.length;i++)
   {
      bankAccountAll=bankAccount[i];
      if(userno==bankAccountAll[0])
     {
         bankAccount.splice(i,1);
      }
   }
  sessionStorage.setItem('user',JSON.stringify(bankAccount));
}

I am getting the error at line

if (userno == bankAccountAll[0])

as "Cannot read property '0' of undefined"

Answer 1

bankAccountAll is an array so bankAccountAll=bankAccount[i] is a wrong statement.You can use bankAccountAll.push(bankAccount[i]) to add element