What is the best way to extract key/value pairs from an object in javascript that have a specific suffix?

I'm dealing with an object:

{
a_suff:"Something",
b_suff: "Value",
c: "Value",
d: "Value,
e_suff: "Value"
}

I'm looking for a way to extract all the keys that end in "_suff". What would be the most efficient solution?

Currently, I have this implementation:

function getFilterKeys(filter) {
    var filtered = {};
    for(var key in myobject) {
      if(key.endsWith(filter)) {
         filtered[key] = myobject[key];
      }
    }
    return filtered;
}

Are there any easier methods or built-in prototype functions for achieving this task?

javascript

Answer №1

The approach employed in this snippet is elegantly straightforward. By leveraging the endsWith string method introduced in ES2015, complexity is reduced significantly. In the past, additional steps or helper functions would have been necessary to accomplish the task at hand. Given that specific properties are being filtered out, iteration over all keys is unavoidable, resulting in an O(n) time complexity, which represents a highly efficient solution.

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