How can I find an array by object value?

Question

This is my variable tree:

I want to find the element by it path. (in the case `Documents it is 0)

Like this myFolder gives me the correct output:

var myFolder = tree.childs[0]

But I do not have the key, I have only the path. I tried:

var myFolder = tree.map(Folder => Folder.path).indexOf('Documents/');

But I get an error message (implicity has an 'any' type)

Does this answer your question? [Find object by id in an array of JavaScript objects](https://stackoverflow.com/questions/7364150/find-object-by-id-in-an-array-of-javascript-objects) — Ivar, Jul 15 '22 at 15:21
@Ivar Thank you. I tried this `var obj = _.find(tree, function (obj) { return obj.path == 'Documents/' })` but still error — peace_love, Jul 15 '22 at 15:24
@Ivar I also tried `var item = tree.find(item => item.path === 'Documents/')` still error — peace_love, Jul 15 '22 at 15:26
can you provide some example data of your tree in code? (not the screenshot) — Dean, Jul 15 '22 at 15:27
See [Typescript: TS7006: Parameter 'xxx' implicitly has an 'any' type](https://stackoverflow.com/questions/43064221/typescript-ts7006-parameter-xxx-implicitly-has-an-any-type) — Ivar, Jul 15 '22 at 15:29
It works now: var item = tree.childs.find(item => item.path === 'Documents/') — peace_love, Jul 15 '22 at 15:29
Please edit your question to include textual input, rather than a screenshot. — user229044, Jul 15 '22 at 15:34

Optimal · Accepted Answer · 2022-07-15T15:34:48.367

const mainFolder = {
    childs: [
        { path: 'ExamplePathNameOne' },
        { path: 'ExamplePathNameTwo' },
        { path: 'ExamplePathNameThree' },
    ]
}

const folder = mainFolder.childs.find(c => c.path === 'ExamplePathNameOne');

But to fix your error message, either set "noImplicitAny": false in your tsconfig.json file or define an interface for the objects you are using, f.e. MainFolder and Folder.

interface MainFolder {
    childs: Folder[];
}

interface Folder {
    path: string;
}

const mainFolder: MainFolder = {
    childs: [
        { path: 'ExamplePathNameOne' },
        { path: 'ExamplePathNameTwo' },
        { path: 'ExamplePathNameThree' },
    ]
}

const folder = mainFolder.childs.find(c => c.path === 'ExamplePathNameOne');

How can I find an array by object value?

1 Answers1