如何将 Boolean 作为表达式返回以替换 if、else true 和 false

Question

I am trying to solve a challenge in freecodecamp and I dont want to write twice return true and false. Instead I am looking for minimizing code and write an expression that evaluates to a boolean

function confirmEnding(str, target) {

    if(str.substr(-target.length) === target){

        //Code that evaluates and returns and expression as a boolean 

    }

}

console.log(confirmEnding("Connor" , "n"));

Answer 1

Simply return the boolean value of evaluating the expression

 function confirmEnding(str, target) { return str.substr(-target.length) === target; } console.log(confirmEnding("hello", "lo")); console.log(confirmEnding("loollo", "lo")); console.log(confirmEnding("leo", "lo"));

Here is another way

 function confirmEnding(str, target) { return str.lastIndexOf(target) + target.length === str.length; } console.log(confirmEnding("hello", "lo")); console.log(confirmEnding("loollo", "lo")); console.log(confirmEnding("leo", "lo"));