javascript - Passing data and submit functions between controllers -

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basically when user submits calculation done data , stored in variable. had working when in 1 controller, need split between pages. want service. see, i'm confused , know i'm doing wrong. not sure going astray or maybe should better handle on misunderstanding - appreciated. basic pointer nice:

.factory('meals', function() {     var data = {         baseprice: 0,         taxrate: 0,         tippercentage: 0,         mealcount: 0,         tiptotal: 0,         averagetip: 0,         subtotal: 0,         tip: 0,         tiptotal: 0,         total:0     }     function set(data) {         saveddata = data;     }     function get(){         return saveddata;     }     return {         set: set,         get:     } }) .controller('homectrl', [function(meals) { }]) .controller('mealctrl', [function(meals) {     var ws = this;     meals.set();     ws.data = meals.get();      ws.submit = function(){         ws.tax_rate= ws.taxrate/100;         ws.tip_rate= ws.tippercentage/100;         ws.subtotal= ws.baseprice*ws.tax_rate;         ws.tip = ws.baseprice*ws.tip_rate;         ws.total = ws.baseprice+ws.subtotal+ws.tip;         ws.mealcount+=1;         ws.tiptotal+=ws.tip;         ws.averagetip=(ws.tiptotal+ws.tip)/ws.mealcount;         items.tiptotal=ws.tiptotal;         items.mealcount=ws.mealcount;         items.averagetip=ws.averagetip;     };      ws.cancel = function(){         ws.baseprice='';         ws.taxrate='';         ws.tippercentage='';     };      ws.double = function(value){return value*2;}; }]).controller('earningsctrl', [function(meals) {

and html:

<h2>enter meal details</h2>  <form name="calculator" ng-submit="ws.submit()">     <p>base meal price:</p>     <input type="number" ng-model="ws.baseprice" required> <br>     <p>tax rate: %</p>     <input type="number" ng-model="ws.taxrate" required> <br>     <p>tip percentage: %</p>     <input type="number" ng-model="ws.tippercentage" required> <br>     <button>submit</button> </form> <button ng-click="ws.cancel()">cancel</button>  <h2>customer charges</h2>     <p>base price {{ws.data.baseprice | currency}}</p>     <p>subtotal {{ws.subtotal | currency}}</p>     <p>tip {{ws.tip | currency}}</p>     <p>total {{ws.total | currency}}</p>


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