Example 1: how to filter an array of objects in javascript
let arr=[{id:1,title:'A', status:true}, {id:3,title:'B',status:true}, {id:2, title:'xys', status:true}];
let x = arr.filter((a)=>{if(a.title=='B'){return a}});
console.log(x)
Example 2: who to accses to an object vallue inside an array with .filter method js
const array = [
{
username: "john",
team: "red",
score: 5,
items: ["ball", "book", "pen"]
},
{
username: "becky",
team: "blue",
score: 10,
items: ["tape", "backpack", "pen"]
},
{
username: "susy",
team: "red",
score: 55,
items: ["ball", "eraser", "pen"]
},
{
username: "tyson",
team: "green",
score: 1,
items: ["book", "pen"]
},
];
const filterArray=array.filter(word=>word.team==="red")
Example 3: javascript object filter
function objectFilter = (obj, predicate) =>
Object.keys(obj)
.filter( key => predicate(obj[key]) )
.reduce( (res, key) => (res[key] = obj[key], res), {} );
var scores = {
John: 2, Sarah: 3, Janet: 1
};
var filtered = objectFilter(scores, num => num > 1);
console.log(filtered);
Example 4: javascript array filter elements greater than
function isGreater(element, index, array) {
return (element >= 10);
}
let testElemets = [12, 5, 8, 130, 44].filter(isGreater);
console.log("Test Value : " + testElemets );