hand 与submit如何区别

hand 与submit如何区别 left hand与left-hand的区别 在JAVA中commit与submit之间的区别? 提交表单时 if($_POST[submit])与 if(isset($_POST[submit])) 的区别if(isset($_POST['submit'])) 它的意思是不是判断是否配置了$_POST['submit'] 这个变量呢?如果有这个变量 在执行其它代码 submit和resign的区别 by hand 与 by the hand的区别 in his hand与with his hand区别 by hand 与 by the hand的区别 submit give out与hand out的区别 hand与head有什么区别? hand made 与homemade的区别? submit=hand in,这里的=用英语怎么说 HTML中,按钮button与submit区别是什么?type=button 单纯是按钮功能；type=submit 是发送表单；既然是这样,那么能否全部用submit代替button? submit 和 buttom有区别吗? hand over hand in区别 at hand与on hand的区别满是尘埃的世界at hand有两个意思是吧~ put your hand in your ear与put your hand on your ear区别?