我们一一点击,就知道发现什么回事了。
隐藏域就不用说了,它肯定会提交。
submit按扭会携带其自身的name,value提交到后台,这样我们就可以少写一个隐藏域。
image按钮这里写不怎么规范,它其实还要一个src属性,指定一个图片,提交时,地址变成这样的:
http://localhost:8383/avalon/newhtml.html?bbb=eee&submit.x=7&submit.y=8&submit=yyy
image能提交你当时的点击位置,因此在早些年,可以防止机器人刷单刷评论!
如果button标签不指定type值,那么它会默认是submit,其效果与input[type=submit]相同!
reset按钮不会提交,因此没有反应。
此外,总结一下各种提交表单的方式:
- 点击input[type=submit]
- 点击input[type=image]
- 点击button[type=submit]
- 在文本域或密码域等可以填空的表单元素内回车!

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