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attempt javascript Code Snippet in 2023

functionintermediate

Last Updated: 1 March 2023

Attempts to invoke a function with the provided arguments, returning either the result or the caught error object.

  • Use a try... catch block to return either the result of the function or an appropriate error.
  • If the caught object is not an Error, use it to create a new Error.
const attempt = (fn, ...args) => { try { return fn(...args); } catch (e) { return e instanceof Error ? e : new Error(e); } };
var elements = attempt(function(selector) { return document.querySelectorAll(selector); }, '>_>'); if (elements instanceof Error) elements = []; // elements = []

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