v1
- by saravanapriyan 11/8/202300
Setup HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js" integrity="sha512-WFN04846sdKMIP5LKNphMaWzU7YpMyCU245etK3g/2ARYbPK9Ub18eG+ljU96qKRCWh+quCY7yefSmlkQw1ANQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>Setup JavaScript
const values = [{_id: {state: 'TN', district:'Chennai'}, value:1},{_id: {state: 'TN', district:'Karur'}, value:1},{_id: {state: 'Kerala', district:'Trivandram'}, value:1}];
const keys = Object.keys(values[0]._id);
const firstCategory = keys[0];
const secondCategory = keys[1];
ready
const grouped = _.groupBy(values, (i)=> {return i._id[firstCategory]});
Object.keys(grouped).map(k=>{return {_id:k, value: grouped[k].length}});
ready
const result = values.reduce((acc, item) => {
if (firstCategory) {
if (!acc[firstCategory]) {
acc[firstCategory] = new Set();
}
acc[firstCategory].add(secondCategory);
}
return acc;
}, {});
const resultArray = [];
for (const category in result) {
resultArray.push({
_id: {
category: category,
},
value: result[category].size,
});
}
return resultArray;