[一、删除表单空格](%E4%B8%80%E3%80%81%E5%88%A0%E9%99%A4%E8%A1%A8%E5%8D%95%E7%A9%BA%E6%A0%BC.md) [二、tp点击更新图片验证码](%E4%BA%8C%E3%80%81tp%E7%82%B9%E5%87%BB%E6%9B%B4%E6%96%B0%E5%9B%BE%E7%89%87%E9%AA%8C%E8%AF%81%E7%A0%81.md) [三、获取验证码，并倒计时](%E4%B8%89%E3%80%81%E8%8E%B7%E5%8F%96%E9%AA%8C%E8%AF%81%E7%A0%81%EF%BC%8C%E5%B9%B6%E5%80%92%E8%AE%A1%E6%97%B6.md)