Suppose, we have an array of objects like this −
const arr = [ { id : "23", name : "Item 1", isActive : true}, { id : "25", name : "Item 2", isActive : false}, { id : "26", name : "Item 3", isActive : false}, { id : "30", name : "Item 4", isActive : true}, { id : "45", name : "Item 5", isActive : true} ];
We are required to write a JavaScript function that takes in one such object and return an array of the value of "id" property of all those objects that have true value for the "isActive" property.
Example
The code for this will be −
const arr = [ { id : "23", name : "Item 1", isActive : true}, { id : "25", name : "Item 2", isActive : false}, { id : "26", name : "Item 3", isActive : false}, { id : "30", name : "Item 4", isActive : true}, { id : "45", name : "Item 5", isActive : true} ]; const findActive = (arr = []) => { const res = []; for(let i = 0; i < arr.length; i++){ const obj = arr[i]; const { id, isActive } = obj; if(isActive){ res.push(id); } }; return res; }; console.log(findActive(arr));
Output
And the output in the console will be −
[ '23', '30', '45' ]