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js30 d27 drag跑馬燈

https://github.com/richardhsieh18/js30/tree/master/course27


CSS
transform: scale(0.98);  =>  transform: scale(1);

js


    isDown = true;
    slider.classList.add('active');
    startX = e.pageX - slider.offsetLeft;
    scrollLeft = slider.scrollLeft;
  });



    if(!isDown) return; //stop the function from running
    e.preventDefault();
    const x = e.pageX - slider.offsetLeft;
    const walk = (x - startX) * 3;
    slider.scrollLeft = scrollLeft - walk;
  });
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