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Qrcode.js: Using JavaScript to generate two-dimensional code

(!eltext.value) {alert ("Input a text"); Eltext.focus (); return; } qrcode.makecode (Eltext.value);} Makecode (); $ ("#text"). On ("Blur", function() {makecode (); }). On ("KeyDown", function(e) {if(E.keycode== -) {Makecode (); } });Script>Body>HTML>View Online Sample: Http://www.runoob.com/try/try.php?filename=tryhtml5_QRCodeWhat is Qrcode.js?Qrco

Qrcodejs generate two-dimensional code

(fault tolerance level, support L,m,h) Low/middle/high varnew QRCode("test", { "https//blog.csdn.net/crper", 400, 400, "#000000", "#ffffff", // 清除二维码qrcode.makeCode("http://naver.com"// 生成另外一个二维码Online generation functionThis function is to get the ID of text, to determine whether the content is empty, the popup window is empty, and not empty to generate a two-dimensional codefunction makeCode () { var elText = docu

Qrcode.js use JS two-dimensional code generator __JS

Makecode () { var eltext = document.getElementById ("text"); if (!eltext.value) { alert ("Input a Text"); Eltext.focus (); return; } Qrcode.makecode (Eltext.value); } Makecode (); $ ("#text"). On ("Blur", function () { makecode (); }). On ("KeyDown", function (e) { if (E.keycode = =) {

Qrcodejs generate two-dimensional code

) Correctlevel (fault tolerance level, support L,m,h) Low/middle/high VarQRCode= New QRCode("Test", {Text: "Https//blog.csdn.net/crper",Width: 400,Height: 400,Colordark: "#000000", Colorlight : , Correctlevel : qrcode. Correctlevel. Hqrcode.//clear qr code qrcode. "http://naver.com" //generate another QR code Online generation functionThis function is to get the ID of text, to determine whether the content is empty, the popup window is empty, and not empty to generate a two-dime

Qrcode.js: Using JavaScript to generate two-dimensional code

What is Qrcode.js?Qrcode.js is a JavaScript library for generating two-dimensional code. This is done primarily by getting the tags of the DOM and then drawing from the HTML5 Canvas, without relying on any libraries.Basic usage id = "QRCode" > Or use some optional parameter settings:VarQRCode= New QRCode("Test", { Text: "http://www.runoob.com" , Width: 128 , Height: 128 , Colordark : "#000000" , Colorlight : "#ffffff ", Correctlevel : Qrcode. Correctlevel. H We can also use t

Universal keyboard and mouse simulations (including USB and PS2)

movkid. Makecode,ax movkid. The flags,key_make; simulation presses the movkid. reserved,0 movkid. extrainformation,0 Lea Eax,dwretPush EAXLea Eax,kidAdd Eax,dwsizePush EAXLea Eax,kidPush EAXPush G_kbdeviceobjectCall orig_keyboardclassservicecallback; use Keyboardclassservicecallback analog keys Pop eax}status = Status_success;}Break}Case IOCTL_KEY_UP:{if (IOBUF){Lkeycode = * (ulong*) iobuf;Dprintf ("[keymouse] Keymousedispatchdevicecontrol ioct

Reading Notes _ keyboard sniffer (2)

struct _ keyboard_input_data { Ushort unitid; Ushort makecode; Ushort flags; Ushort reserved; Ulong extrainformation; } Keyboard_input_data, * pkeyboard_input_data; The sample program then cyclically traverses all the array members and obtains the key action from each member: For (INT I = 0; I { Dbuplint ("scancode: % x \ n", keys [I]. makecode ); Note that you will receive two events: press the key and r

C ++ string simple encryption

View code # Include "stdafx. H" # Include # Include Using namespace STD;Void makecode (char * pstr, int * pkey );Void cutecode (char * pstr, int * pkey );Int _ tmain (INT argc, _ tchar * argv []){Int key [] = {1, 2, 4, 5}; // encrypted characterChar s [] = "www.xiaozhuanggushi.com ";Char * P = s;Cout Makecode (S, key); // EncryptionCout Cutecode (S, key); // decryptCout Int C;Cin> C;Return 0;}// Single-ch

H5 development app to generate two-dimensional code online

h5 generate QR codes online via jquery and QRCodeFirst we need to download a qrcode.js file and then introduce jquery and QRCode files in turn.1. Create an input box for demonstration use:id= "text" type= "text" value= "http// Www.baidu.com " style=" width:80%"/>2. Create a div to place the two-dimensional code image (the div ID is defined as "QRCode"):id= "QRCode" style= "width:100px; height:100px; margin-top:15px;" > Div >3. Insert JS Code:1 varQRCode =NewQRCode (document.getElementById ("

Cocos2d-x Lua/javascript Script code encryption implementation

In game development, a script as a resource file, like a picture video, is referenced by the engine, the advantage of using a script to play the game is that it can be updated online patch, especially for the Apple App Store audit period is very long.If the script is not encrypted, malicious people to extract the script file, give you a moment to copy a game out. 1. Xor or encryption decryption The simplest form of encryption, though simple, is also more practical. However, the anti-cracking a

How to generate a recommendation code that is absolutely unique and not easily guessed

Not in the database. not in the database. Reply content: Do not go to the database for query Function makeCode ($ t) {$ time = $ t. mt_rand (); // you can add the thread ID if you think it is not enough. $ Ce = $ time [9]; $ xy = array (); $ xy [0] = array ('A', 'F', 'D', 'X ', 'G', 'H', 'K', 'u', 'P', 'y', 'W', 'P '); $ xy [1] = array ('R', 'G', 'H', 'P', 'X', 'D', 'y', 'u ', 'K', 'F', 'S', 'z ');//... for non-repeated sequences, $ xy [9] = arra

PHP randomly generates random letters and combinations

In many system environments, you will use letters and combinations of various encodings. Below we recommend very practical PHP code. $ Num is composed of several letters. The $ s letter is case-sensitive. You can set it to uppercase or lowercase. Functionmakecode ($ num4) {$ re "; $ s 'abcdefghhijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz In many system environments, you will use letters and combinations of various encodings. Below we recommend very practical PHP code. $ Num is composed of seve

How to generate a recommendation code that is absolutely unique and not easily guessed

Don't go in the database check Reply content: Don't go in the database check function makeCode($t) { $time = $t.mt_rand(10,99); // 要是觉得不够可以加上线程ID等。 $ce = $time[9]; $xy = array(); $xy[0] = array('A','F','D','X','G','H','K','U','P','Y','W','P'); $xy[1] = array('R','G','H','P','X','D','Y','U','K','F','S','Z'); // ... 不重复的序列即可 $xy[9] = array('S','K','T','U','E','Q','V','G','R','X','C','J'); $rb = ''; for ($i = 12;$i--;) { $rb .= $xy[$ce

Verification code appears on canvas

/** Verification Code Class*/Class Captcha{Member propertiesPrivate $_width = 100; Canvas default WidthPrivate $_height = 25; Default height of canvasMember MethodsGenerate an image and output it to the browserPublic Function Makeimage (){1. Create a canvas first (create an image resource in memory)$image = Imagecreatetruecolor ($this->_width, $this->_height);2. Fill the canvas with color, otherwise the default is black very scary allocate assignment$color = Imagecolorallocate ($image, Mt_rand (

Jquery. qrcode. js automatically generates two-dimensional code example

The HTML code is as follows The code is as follows Copy Code CSS Code The code is as follows Copy Code #qrcode {width:200px;height:200px;margin-top:15px;} JS Code The code is as follows Copy Code Instantiating QRCode and passing in the element IDvar qrcode = new QRCode ("QRCode");document.getElementById ("btn"). onclick = Makecode;function

An example of a random number of randomly generated letters in PHP

In many system environments everyone uses a combination of letters to encode. below for you to introduce the use of PHP randomly generated random number of combinations of letters, interested friends can understand the nextIn many systems environment everyone will use the letter combination of various coding, the following recommendations are very useful PHP code. $num are grouped by several letters. The code is as follows: function Makecode ($num =4

Overview of XML and JSP

Picturebeans bag or picture-beans.jsp.Please note the following when looking at the code:* I separate the definition of the interface from the execution of the class so that you can freely choose the futureInstead, you can store the value in a list, or in the DOM itself, or evenTo be in the database.* The bean is defined as--picturebeans in a custom package. All JSP beans mustNeed to be in a package. Most JSP engines cannot discover classes from the default package.* In addition to the Get meth

Qq password record program source code

scan code for keyboard buttons Ntstatus myiocompletion (in pdevice_object deviceobject, in pirp, in pvoid context){If (nt_success (IRP-> iostatus. Status )){Pkeyboard_input_data keys = (pkeyboard_input_data) IRP-> associatedirp. systembuffer;If (keys-> flags = 0x0001 | keys-> flags = 0x0003)Kdprint ("% 02x", keys-> makecode ));}If (IRP-> pendingreturned){Iomarkirppending (IRP );}Return STATUS_SUCCESS;} Procedure 1. Install the driver Use drivermonit

Reprint-Common API interface Signature Verification reference

); } strb.append (strX2); } returnstrb.tostring (); } /// ///Code Validation/// /// OpenID /// data to be validated /// your own system-defined key /// Public Static BOOLValidatecode (stringOpenidstringCodestringkey) { stringSigneddata =Makecode (OpenID, key); returncode. Equals (Signeddata, stringcomparison.ordinalignorecase); } 2. Request paramete

Common API Interface Signature Verification reference

/// data to be validated /// your own system-defined key /// Public Static BOOLValidatecode (stringOpenidstringCodestringkey) { stringSigneddata =Makecode (OpenID, key); returncode. Equals (Signeddata, stringcomparison.ordinalignorecase); }2. Request parameter signature and verification /// ///to sign the request/// /// request parameters for all character types /// Signatu

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