how to count duplicate values object to be a value of object

by 
const data = [{"no":3,"name":"drink"},{"no":90,"name":"eat"},{"no":20,"name":"swim"}];
const arr = [3,3,3,3,3,3,3,3,3,3,3,20,20,20,20,80,80];
const lookup = {};

// Loop over the duplicate array and create an
// object that contains the totals
for (let el of arr) {

  // If the key doesn't exist set it to zero,
  // otherwise add 1 to it
  lookup[el] = (lookup[el] || 0) + 1;  
}

const out = [];
// Then loop over the data updating the objects
// with the totals found in the lookup object
for (let obj of data) {
  lookup[obj.no] && out.push({
    no: obj.no,
    total: lookup[obj.no]
  });
}

document.querySelector('#lookup').textContent = JSON.stringify(lookup, null, 2);
document.querySelector('#out').textContent = JSON.stringify(out, null, 2);
<h3>Lookup output</h3>
<pre id="lookup"></pre>

<h3>Main output</h3>
<pre id="out"></pre>

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