I am trying to filter an array with all the possible matches. How can i implement please guide me.
arr = [{test: 100}, {test: 100A}, {test: 100B}, {test: 100C}, {test: 101}, {test: 101}]
// i want to filter the above array which matches 100.
I have tried.
var arr1 = arr.filter(x => x.test === 100);
console.log(arr1);
it returns only {test: 100} instead i want {test: 100}, {test: 100A}, {test: 100B}, {test: 100C}
Assuming your test values are actually strings, you can use String.startsWith to do the filtering:
arr = [
{test: '100'}, {test: '100A'}, {test: '100B'},
{test: '100C'}, {test: '101'}, {test: '101'}
];
arr1 = arr.filter(o => o.test.startsWith('100'));
console.log(arr1);There are multiple ways you can do this:
You can use filter and includes function together to see if value test is 100 and other matching strings.
Using includes
let arr = [{test: '100'}, {test: '100A'}, {test: '100B'}, {test: '100C'}, {test: '101'}, {test: '101'}]
var arr1 = arr.filter(str => str.test.includes('100'));
console.log(arr1);You can use filter will indexOf
Using indexOf
let arr = [{test: '100'}, {test: '100A'}, {test: '100B'}, {test: '100C'}, {test: '101'}, {test: '101'}]
var arr1 = arr.filter(str => str.test.indexOf('100') > -1);
console.log(arr1);try this:
var arr1 = arr.filter(x => x.test.includes(100));
Since you are using ===, you are checking exact value and type.
If you want to filter based on value, first convert the string to value using parseInt and then compare.
const arr = [{test: '100'}, {test: '100A'}, {test: '100B'}, {test: '100C'}, {test: '101'}, {test: '101'}]
const res = arr.filter(({test}) => parseInt(test) === 100);
console.log(res);
{test: 100A}is not valid javascript syntax, are you sure this is the array?SyntaxErrorwith your currentarr.