Javascript-question about url path?

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In this case, index. php (subject file): link. php: link form. php. Access to these three files is from index. php. Click the 'link form' button. The content of form. php is displayed in content. php. Click the submit button of form. php. Why does the link point to:/form. php ?? It is not clear that such a link, please solve it ??

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In this case, index. php (subject file): link. php: link form. php. Access to these three files is from index. php. Click the 'link form' button. The content of form. php is displayed in content. php. Click the submit button of form. php. Why does the link point to:/form. php ?? It is not clear that such a link, please solve it ??

Your form does not set action, so it points to the current url, and your current url is/form. php