how to get sum of total value in array inside for loop in ext js

Question

Inside the for loop I m getting this data

This values getting from EXT js store.

  var sum = results.rows.item(i).Count;
  console.log(sum);

in the result, it showing

2

5

6

3

I need a total count of this sum in a single variable. Anybody can answer this, please. It's a javascript function.

Save all values inside an array, then to a Array.reduce on it. (Like shown here https://stackoverflow.com/a/43363105/3020926) — paskl, Oct 24 '19 at 12:49

score 2 · Answer 1 · answered Oct 24 '19 at 12:49

2

You can use the reduce function for that:

let array = [2,5,6,3];


// will reduce an array to a single variable.
let sum = array.reduce((collector, num) => {
  // the collector is kept for each iteration
  return collector += num;
}, 0 /* initial value is 0 */);

console.log(sum)

answered Oct 24 '19 at 12:49

Nicolas

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i need a javascript function for this. I couldn't get this one – sarathi Oct 24 '19 at 12:55
extjs has built in function for this already, no need for extra javascript. – Dawesi Oct 26 '19 at 15:12

score 0 · Answer 2 · answered Oct 26 '19 at 15:11

just use ExtJS's inbuilt function on the store object:

myStore.sum('items'); // assuming 'items' is the field you need to sum

https://docs.sencha.com/extjs/7.0.0/classic/Ext.data.Store.html#method-sum

if it's a grouped store you can also get sum of group.

how to get sum of total value in array inside for loop in ext js

2 Answers2