javascript JavaScript范围 - Var

Posted 2021-05-03

var fruit = 'apple';
var num = 2; 

function run() { 
  var num = 1;
  console.log(num);
  console.log(fruit);
  fruit = 'banana';
}

run();
console.log(num);
console.log(fruit);

// Output :
// 1 
// apple
// 2
// banana