如果背叛是一种勇气，那么接受背叛则需要更大的勇气。
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【 Abstract 】 Cross site scripting （XSS） is one of the most popular WEB Attacking methods at present， and also one of the most risky web attacks. Because of the popularization of JavaScript， the scene of the cross site scripting attack is also gradually d it’s more and more harmful with the hacker’s deepening understanding. Compared with other vulnerabilities， all the scanners have a high accuracy for the recognition of the XSS， Popularize of XSS platform which is for XSS depth using manufacturing conditions， make more and more people bee masters of XSS attack. In the foreseeable future， XSS will be essential knowledge for website is paper analysis how XSS vulnerabilities could be used at present，which may be helpful to developers who are going to write some process with the relevant business scene code， also make more security engineeers know it， to promote the development of Inter security ecological circle.