CODEWITHSUNDEEP
angulartypescript
travis_91
travis_91

Reputation: 173

Match a string with a element of list

I have a list in this way

let array = [
     { url: 'url1'},
     { url: 'url2/test', children: [{url: 'url2/test/test'}, {url: 'url2/test2/test'}],
     { url: 'url3', children: [{url: 'url3/test3/test3}, {url: 'url3/test3/test1'}],  children: [{url: 'url3/test3/test1/test5'}]},
     { url: 'url4', children: [{url: 'url4/test4/test4'}, {url: 'url3/test4/test4'}]]

and a input string that is a url.(e.g url: 'url3/test3/test1').

My purpose is to check if input url exist in the list without using for loop.(with map, some, filter or other functions..)

How can I do?

My purpose is to check if the

Upvotes: 0

Views: 90

Answers (2)

Karan
Karan

Reputation: 12629

You can create check function like below. It will also call itself recursively if children property exists. Then use some method to get result.

let array = [{url:'url1'},{url:'url2/test',children:[{url:'url2/test/test'},{url:'url2/test2/test'}]},{url:'url3',children:[{url:'url3/test3/test3'},{url:'url3/test3/test1'}],},{url:'url4',children:[{url:'url4/test4/test4'},{url:'url3/test4/test4'}]}];

function check(arr, url) {
  return arr.some(a => a.url == url || (a.children && check(a.children, url)));
}

let isExists = check(array, 'url3/test3/test3');
console.log(isExists);

let isExists2 = check(array, 'url3/test3');
console.log(isExists2);

Upvotes: 2

Axwabo
Axwabo

Reputation: 49

Try this:

var search = "url3/test/test1";
var index = array.indexOf(array.find(el1 => {
if (el1.children != undefined) return el1.children.some(el2 => el2.url.includes(search));
}));

And correct the array, because it's a bit messed up. Snippet:

let array = [
     { url: 'url1'},
     { url: 'url2/test', children: [{url: 'url2/test/test'}, {url: 'url2/test2/test'}]},
     { url: 'url3', children: [{url: 'url3/test3/test3'}, {url: 'url3/test3/test1'}, {url: 'url3/test3/test1/test5'}]},
     { url: 'url4', children: [{url: 'url4/test4/test4'}, {url: 'url3/test4/test4'}]}]
     
function findIt(search) {
var index = array.indexOf(array.find(el1 => {
if (el1.children != undefined) return el1.children.some(el2 => el2.url.includes(search));
}));
if (index > -1) console.log(array[index].url); else console.log("Could not find " + search)
}
<input oninput="findIt(this.value)">

Upvotes: 0

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