age

by this_mong

HTML

<input type="number" id="age" placeholder="내가 태어난 년도?" value="0">
<button onclick="result();">현재 나의 나이는?</button>
<div id="txt"></div>

JavaScript

function result(){
	var CurrentYear = new Date().getFullYear();
	var CurrentYearNumber = Number(CurrentYear); 
	var age = document.querySelector("#age").value;
	var ageNumber = Number(age);

	var resultTxt = (CurrentYearNumber - ageNumber)+1;
	document.getElementById("txt").innerHTML = "당신의 현재 나이는 "+resultTxt+"입니다.";
};