javascript indexOf object value in array
// Get index of object with specific value in array
const needle = 3; // needle
const haystack = [{ id: 1 }, { id: 2 }, { id: 3 }]; // haystack
const index = haystack.findIndex(item => item.id === needle);javascript indexOf object value in array
// Get index of object with specific value in array
const needle = 3; // needle
const haystack = [{ id: 1 }, { id: 2 }, { id: 3 }]; // haystack
const index = haystack.findIndex(item => item.id === needle);javascript get index of object in array
// Get index of object with specific value in array
const needle = 3;
const haystack = [{ id: 1 }, { id: 2 }, { id: 3 }];
const index = haystack.findIndex(item => item.id === needle);find the index of an object in an array
const letters = [{letter: 'a'},{letter: 'b'},{letter: 'c'}]
const index = letters.findIndex((element, index) => {
if (element.letter === 'b') {
return true
}
})
//index is `1`get index of element in array js
const beasts = ['ant', 'bison', 'camel', 'duck', 'bison'];
beasts.indexOf('bison'); //ouput: 1
// start from index 2
beasts.indexOf('bison', 2); //output: 4
beasts.indexOf('giraffe'); //output: -1get index of element in array javascript
var scores = [10, 20, 30, 10, 40, 20];
console.log(scores.indexOf(30)); // 2
console.log(scores.indexOf(50)); // -1Copyright © 2021 Codeinu
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