html中id和name元素如何获取/jquery如何通过id获得input的value值
https://jingyan.baidu.com/article/6079ad0eddeb5e28ff86dbfb.html
https://jingyan.baidu.com/article/adc8151393bad6b623bf7380.html
document.getElementById();
https://jingyan.baidu.com/article/6079ad0eddeb5e28ff86dbfb.html
https://jingyan.baidu.com/article/adc8151393bad6b623bf7380.html
document.getElementById();