
內容簡介
No Spam 是一個簡單、輕量和高效的反垃圾郵件外掛。
它利用人和機器人在訪問(或爬行)頁面時的不同之處。
大多數人類訪問者的客戶端都啟用了 javascript,而大多數垃圾郵件機器人則沒有啟用。然後,No Spam 插件使用 javascript 在評論表單中添加一個輸入字段。提交後,插件會檢查此字段是否存在。
由於垃圾郵件機器人通常不知道哪些字段是必填的,哪些不是,他們習慣填寫所有字段。插件在評論表單中添加了一個額外的字段(值為空),並使用 CSS 樣式將其隱藏。提交後,插件會檢查該字段是否仍然為空。
外掛標籤
開發者團隊
原文外掛簡介
No Spam is a simple, lightweight and efficient anti-spam plugin.
It relies on differences between humans and robots when they visit (or crawl) a page.
Most of human visitors clients are javascript enabled and most of spam bot are not. Then the No Spam plugin adds an input field in the comment form using javascript. After submission, the plugin check if this field exists.
As spam bots usually don’t kown which fields are required and which are not, they use to fill all the fields. The plugin adds a extra field (with empty value) in the comment form and hide it with CSS styling. After submission, the plugin check if the field is still empty.
