phantomjs
一般提交时都会用submit，前提条件就是网页中有form表单；
在网页中无form表单的情况下,用submit()会报错：selenium.common.exceptions.NoSuchElementException: Message: {"errorMessage":"Element was not in a form, so could not submit.",
此时就需要用click()
原文：http://www.cnblogs.com/yiyezhouming/p/6860605.html