Example 1: js filter array of objects by value
var heroes = [
{name: “Batman”, franchise: “DC”},
{name: “Ironman”, franchise: “Marvel”},
{name: “Thor”, franchise: “Marvel”},
{name: “Superman”, franchise: “DC”}
];
var marvelHeroes = heroes.filter(function(hero) {
return hero.franchise == “Marvel”;
});
// [ {name: “Ironman”, franchise: “Marvel”}, {name: “Thor”, franchise: “Marvel”} ]
Example 2: filtering json array in javascript
const data = [
{
name: 'Bob',
gender: 'male',
age: 34,
},
{
name: 'Carol',
gender: 'female',
age: 36,
},
{
name: 'Ted',
gender: 'male',
age: 38,
},
{
name: 'Alice',
gender: 'female',
age: 40,
},
];
const arr1 = data.filter(d => d.age > 37);
console.log('arr1', arr1);
const arr2 = data.filter(d => d.gender === 'female');
console.log('arr2', arr2);
const ageAndGender = d => d.age > 37 && d.gender === 'female';
const arr3 = data.filter(ageAndGender);
console.log('arr3', arr3);
Example 3: filter in js
const filterThisArray = ["a","b","c","d","e"]
console.log(filterThisArray) // Array(5) [ "a","b","c","d","e" ]
const filteredThatArray = filterThisArray.filter((item) => item!=="e")
console.log(filteredThatArray) // Array(4) [ "a","b","c","d" ]
Example 4: javascript filter array of objects
function isBigEnough(value) {
return value >= 10
}
let filtered = [12, 5, 8, 130, 44].filter(isBigEnough)
// filtered is [12, 130, 44]