global with sharing class AccountRemoter {




@RemoteAction
global static List<AggregateResult> getAccountList(){

  List<Account> accList=[select id,Name from account];
 List<AggregateResult> contactList =   [ SELECT  AccountId Id, COUNT(Id)
 numContacts FROM Contact WHERE AccountId IN (Select Id from Account) GROUP
 BY AccountId ORDER BY COUNT(Id) DESC LIMIT 10];
 return contactList;
 }

 }

<apex:page Controller="AccountRemoter">
<apex:includeScript value="{!$Resource.jquery}"/>
<apex:includeScript value="{!$Resource.chartLibrary}"/>
<canvas id="myChart" width="400" height="400"></canvas>
<script>
var names=[];
 Visualforce.remoting.Manager.invokeAction(
 '{!$RemoteAction.AccountRemoter.getAccountList}',

 function(result, event) {

var test = result;
var data=[];


for (var i = 0; i< result.length ; i++){
  data.push(test[i]);
}
console.log(data[0]);
console.log(data[0].numContacts);


var ctx = document.getElementById("myChart");

var myChart = new Chart(ctx, {
  type: 'bar',
  data: {
      labels:


  [names[0], names[1], names[2],names[3],names[4],
  names[5],names[6],names[7], names[8],names[9]],
      datasets: [{
      label: 'No. Of Contacts in each account',
      data: [data[0].numContacts,data[1].numContacts,
     data[2].numContacts,data[3].numContacts,
     data[4].numContacts,data[5].numContacts,data[6].numContacts,
     data[7].numContacts,data[8].numContacts,data[9].numContacts],
      backgroundColor: [
        'rgba(255, 99, 132, 0.2)',
        'rgba(54, 162, 235, 0.2)',
        'rgba(255, 206, 86, 0.2)',
        'rgba(75, 192, 192, 0.2)',
        'rgba(153, 102, 255, 0.2)',
        'rgba(255, 159, 64, 0.2)',
        'rgba(255, 99, 132, 0.2)',
          'rgba(54, 162, 235, 0.2)',
        'rgba(255, 206, 86, 0.2)',
        'rgba(75, 192, 192, 0.2)'
        ]
        }]
    },
  options: {
    responsive: false,
    scales: {
      xAxes: [{
      ticks: {
        maxRotation: 90,
        minRotation: 80
      }
    }],
    yAxes: [{
      ticks: {
        beginAtZero: true
      }
    }]
  }
  }
 });

});



</script>

</apex:page>