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Functions
As you might have guessed, JavaScript supports functions via the function keyword.
Even JavaScript isn't crazy enough to not support functions.
// function declaration
function getSum(a, b) {
return a + b;
}
// function call
const result = getSum(60, 9);
console.log(result);
// 69
Assignment
We often need to manipulate strings in Textio. For example, adding some personalization by using a customer's name within a template. The concat function should take two strings and combine them together.
hello+world=helloworld
Fix the function signature of concat to reflect its behavior.