Tag：Verification Code
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Time：2019-11-19
Preface Picture verification code is an indispensable function in our daily development. Recently, we have met this requirement in our work. So let’s share the implementation method to you. Let’s have a look at the detailed introduction. . net core 2.0 generate picture captcha Nuget package import: zkweb.system.drawing, as follows: The code example is as […]
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Time：2019-11-18
I don’t need to talk about much nonsense. I’ll post the code for you. The specific code is as follows: <script src=”js/j.js”></script> <script> $(document).ready(function(e) { $(‘#yes’).hide(); $(‘#no’).hide(); $(‘input[name=gcode]’).keyup(function(){ if($(this).val().length==4){ $.post(‘gbook.php’,{cc:$(‘input[name=gcode]’).val()},function(msg){ if(msg==’yes’){ $(‘#no’).hide(); $(‘#yes’).show(); }else{ $(‘#yes’).hide(); $(“#no”).show(); } }); } }); }); </script> First, introduce jquery .sl-error-verifycode { background-image: url(“images/icons.png”); background-position: -26px 0; background-repeat: no-repeat; display: […]
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Time：2019-11-15
1) difference between H5’s new sessionstorage and localstorage sessionStorageSimilar to Java session, it can store information in a short time. Computer browsers often use session storage to store user login information (personal understanding) localStorageIt can keep the user information permanently without logging in every time. It is often used in app 2) common […]
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Time：2019-10-11
Reptiles will always be sealed up after they have been used for a long time. — Lu Xun Some websites, especially some old ones, have not done anti-crawler mechanism. We can climb freely and happily and put their underwear on it. The data all crawled down. For emotional reasons at most, we crawl slowly […]
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Time：2019-9-27
This paper illustrates the configuration and operation of captcha verification code of TP5 (thinkPHP5 framework). Share for your reference, as follows: 1- installation composer require topthink/think-captcha 1.* -vvv 2 – Configuration file ‘captcha’=> [//Verification Code Character Set 3. ‘codeSet’=>’2345678 ABC defhijkmnpqrstuvwxyz ABCDEFGHJKLMNPQRTUVWXY’, //Verification Code Font Size (px) 5. ‘fontSize’=> 28, // / Whether to draw […]
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Time：2019-9-19
Jquery’s green drag validation function I saw a question on the Internet: how can the verification method of matching graphics like dragging sliders be realized? Suddenly I thought of implementing a simple green drag validation code function. After searching the Internet, I found a function code implemented with jquery. Experience address: http://yanshi.sucaihuo.com/jquery/8/897/demo/. Its CSS code: […]
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Time：2019-9-13
Verification Code Making # String module has its own set of numeric, alphabetic and special character variables, so we don’t need our handwritten set. import string import random import os import uuid import settings from PIL import Image, ImageDraw, ImageColor, ImageFilter, ImageFont class Code(object): # Generate random numbers or letters def random_hexdigits(self, len=1): return random.sample(string.hexdigits, […]
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Time：2019-8-30
This paper illustrates the function of generating random password (verification code) implemented by php/JS. Share for your reference, as follows: PHP Writing: //A-Z a-z 0-9 !#$%^&* $str = “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!#$%^&*”; // Generating random characters function createPwd($str,$len){ $pwd = ”; $strlen = strlen($str); for($i=0;$i<$len;$i++){ $pwd .= $str{mt_rand(0,$strlen-1)}; } return $pwd; } echo createPwd($str,16); Operation results: TX!kXjmpZeHS7GOO JS […]
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Time：2019-8-20
It’s okay to write a simple object-oriented validation code class that you can use directly (replace the font path) <?php class authCode { Private static $instance = null; instance object Private $width = 120; Picture width Private $height = 40; Picture height Private $font = font / elephant. ttf’; font file path Private $fontSize = […]
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Time：2019-8-17
Now many websites, such as Taobao, Jingdong and so on, use the extreme drag authentication code to log in. This way has better experience than the traditional authentication code way, reduces user input errors, and also can play the role of anti-theft brush. Nowadays, many extreme experiments are third-party, and many of them are charged. […]
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Time：2019-8-15
Preface In the traditional Web development process, it is very simple to process graphics authentication code. It only needs to generate a picture with random strings in the background and put the content of verification code into Session. When the user submits the form, it can judge from Session [1]. But nowadays, API interaction is […]
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Time：2019-8-6
In this paper, we share the specific code of Ajax to realize the function of verification code for your reference. The details are as follows. First, create a validation code: <%@ page contentType=”image/jpeg; charset=utf-8″ language=”java” import=”java.util.*,java.awt.*,java.awt.image.*,javax.imageio.*” pageEncoding=”UTF-8″%> <! – Import AWT and awt. image packages above – > <%! // Getting Random Colors public Color […]
