After testing the code in a standard browser, it appears to be functioning as intended - jsfiddle.
Is there a way to replace the native trim() function in JavaScript?
Although it is possible, overriding the implementation of the native trim() function is generally discouraged.
I will demonstrate how it can be done, but keep in mind that this may not be ideal.
Here's an example of how you can override it:
String.prototype.trim = x => console.log('trim override');
'olá'.trim(); // trim override
What might cause this unexpected behavior?
If the code is behaving differently than expected, it's likely that the original developer has modified the trim function to do something other than its default behavior. I recommend trying to use a polyfill with the original implementation in your console to see if that resolves the issue.
Here is the polyfill:
String.prototype.trim = function () {
return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
};
console.log('olá'.trim());
If running this code produces the correct result (without trimming 'á'), then you have identified the problem.