JSFiddle - React, Tailwind, and code Playground

JavaScript

let arr =["test", 'xyz', '1 test', 'ramu'];

let ans = arr.filter(x=> {
	let temp = x.toUpperCase().charCodeAt(0);
  console.log(temp);
	if(temp<=65 || temp>=91) {
  	return x;
  }
})
console.log(ans);