Resolved: How to create array of object in javascript explicitly

Question:

I receive a file path string like so:

let sampletext="Home/Student/Hello.txt";

And I want to convert this into the following structure dynamically. How should I best go about this?

let idarray=[
    {
        'id':'Home',
        'parent': '',
    },
    {
        'id':'Student',
        'parent': 'Home',
    },
    {
        'id':'Hello.txt',
        'parent': 'Student',
    }
]

Answer:

split on / and then build it from there – you can do this concisely with map:

let sampletext="Home/Student/Hello.txt";

let componentsArr = sampletext.split("/");
let idarray = componentsArr.map(( id, i ) => ({
    id,
    parent: componentsArr[i - 1] || ""
}));

console.log(idarray);

This is very simple – just set the id property to be whatever value you’re currently iterating over, and then if there exists a value before it (i.e. if this is not the first/root item) then set its parent value to the previous value; otherwise, it’s an empty string. You could remove componentsArr and refer to the splitting n times but that’s mildly inefficient in my opinion.

If you have better answer, please add a comment about this, thank you!

Resolved: How to create array of object in javascript explicitly

Resolved: How do I use SetWindowText with Unicode in Win32 using PowerShell?

Resolved: Shopware 400 Status Error “This value is too long. It should have 255 character or less.” When I Try Updating Database Table

Resolved: Using AWK to count multiple patterns in a file

Leave A Reply