add captcha to google form

1. Introduction Sometimes we need to use verification code in the form submission to prevent flooding, bots and other malicious operations, about the verification code has a lot of open source Library to use, the current most used is the Google

50 jquery plugins for form functionality, validation, security and customisation To be honest, entering a form is always a pain point. What about developers? You can create a form to say they are more painful. No one will really like them. For

Step One:Add Kaptchar jar package to the project: http://code.google.com/p/kaptcha/(Thunder download is recommended)Step Two:Configure Web. XML, detailed configuration (not all configurations here, there are many parameters can be reduced as

Author: White Wolf Source: Http://www.manks.top/article/yii2_captcha This article copyright belongs to the author, welcome reprint, but without the author consent must retain this paragraph statement, and in the article page obvious location gives

Originally thought Yii2 frame Verification code This piece is very comprehensive, try Baidu Google a bit, most of the tutorials write fragmented, thinking of their own write a full step of the verification Code tutorial. We assume that the

Attach source code: Http://pan.baidu.com/s/1mgDptZa　　This article is mainly to explain how to add the verification code function on the login page, the default login page is only the user name and password function. Other I think add verification

Article Walker link: http://www.cnblogs.com/rgbw/archive/2012/12/26/2834567.htmlVerification Code of yesterday, today and tomorrowWhy use a verification codeWithout a verification code, an attacker would use unwanted programs to automatically

Apache Shiro is a powerful and easy-to-integrate open-source rights framework that enables authentication, authorization, encryption, session management, and more. Authentication and authorization are the core of authority control, simply,

Yii2 detailed steps to add verification code-White Wolf stack author: White Wolf Source: Yellow. I thought the yii2 framework verification code was comprehensive. I tried Baidu and google. most of the tutorials were not completely scattered. I

Apache Shiro is a powerful and easy-to-integrate open-source rights framework that enables authentication, authorization, encryption, session management, and more. Authentication and authorization are the core of authority control, simply,