qq_34251179:
let color = "blue";
const color_b = 'red'
function changeColor() {
let color = 'yellow'
console.log(color)//yellow
const color_b = 'black'
console.log(color_b)//black
}
changeColor();
console.log(color)//black
console.log(color_b)//blue 这个最后打印的两行我运行之后，发现结果是
console.log(color)//blue
console.log(color_b)//red，不知道是我运行问题还是