Javascript/Number()

解説数値

sample1code

var s1Num = new Number(123);
console.log(s1Num);

sample2

sample2code

function s2Func(){
  var s2Str = "123";
  var s2Num = Number(s2Str);
  console.log(s2Str);
  console.log(s2Num);
}