QR code generating with vanilla js

Developer
Englishextra
Size
5,758 Kb
Views
8,092
  1. QR code generating with vanilla js Previews
  2. QR code generating with vanilla js HTML Codes
  3. QR code generating with vanilla js JS Codes

How do I make an qr code generating with vanilla js?

QR code generating with vanilla js (SVG Element, Data URI PNG String, HTML table element) https://github.com/englishextra/qrjs. What is a qr code generating with vanilla js? How do you make a qr code generating with vanilla js? This script and codes were developed by Englishextra on 17 January 2023, Tuesday.

QR code generating with vanilla js Previews
IQ Test

QR code generating with vanilla js - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>QR code generating with vanilla js</title>
</head>
<body> <script src="js/index.js"></script>
</body>
</html>

QR code generating with vanilla js - Script Codes JS Codes

!function(r,t,e){r[t]=e()}("undefined"!=typeof window?window:this,"QRCode",function(){for(var r=[null,[[10,7,17,13],[1,1,1,1],[]],[[16,10,28,22],[1,1,1,1],[4,16]],[[26,15,22,18],[1,1,2,2],[4,20]],[[18,20,16,26],[2,1,4,2],[4,24]],[[24,26,22,18],[2,1,4,4],[4,28]],[[16,18,28,24],[4,2,4,4],[4,32]],[[18,20,26,18],[4,2,5,6],[4,20,36]],[[22,24,26,22],[4,2,6,6],[4,22,40]],[[22,30,24,20],[5,2,8,8],[4,24,44]],[[26,18,28,24],[5,4,8,8],[4,26,48]],[[30,20,24,28],[5,4,11,8],[4,28,52]],[[22,24,28,26],[8,4,11,10],[4,30,56]],[[22,26,22,24],[9,4,16,12],[4,32,60]],[[24,30,24,20],[9,4,16,16],[4,24,44,64]],[[24,22,24,30],[10,6,18,12],[4,24,46,68]],[[28,24,30,24],[10,6,16,17],[4,24,48,72]],[[28,28,28,28],[11,6,19,16],[4,28,52,76]],[[26,30,28,28],[13,6,21,18],[4,28,54,80]],[[26,28,26,26],[14,7,25,21],[4,28,56,84]],[[26,28,28,30],[16,8,25,20],[4,32,60,88]],[[26,28,30,28],[17,8,25,23],[4,26,48,70,92]],[[28,28,24,30],[17,9,34,23],[4,24,48,72,96]],[[28,30,30,30],[18,9,30,25],[4,28,52,76,100]],[[28,30,30,30],[20,10,32,27],[4,26,52,78,104]],[[28,26,30,30],[21,12,35,29],[4,30,56,82,108]],[[28,28,30,28],[23,12,37,34],[4,28,56,84,112]],[[28,30,30,30],[25,12,40,34],[4,32,60,88,116]],[[28,30,30,30],[26,13,42,35],[4,24,48,72,96,120]],[[28,30,30,30],[28,14,45,38],[4,28,52,76,100,124]],[[28,30,30,30],[29,15,48,40],[4,24,50,76,102,128]],[[28,30,30,30],[31,16,51,43],[4,28,54,80,106,132]],[[28,30,30,30],[33,17,54,45],[4,32,58,84,110,136]],[[28,30,30,30],[35,18,57,48],[4,28,56,84,112,140]],[[28,30,30,30],[37,19,60,51],[4,32,60,88,116,144]],[[28,30,30,30],[38,19,63,53],[4,28,52,76,100,124,148]],[[28,30,30,30],[40,20,66,56],[4,22,48,74,100,126,152]],[[28,30,30,30],[43,21,70,59],[4,26,52,78,104,130,156]],[[28,30,30,30],[45,22,74,62],[4,30,56,82,108,134,160]],[[28,30,30,30],[47,24,77,65],[4,24,52,80,108,136,164]],[[28,30,30,30],[49,25,81,68],[4,28,56,84,112,140,168]]],t=0,e=1,n=2,a=4,o=8,u=/^\d*$/,l=/^[A-Za-z0-9 $%*+\-./:] * $ /,i=/^[A-Z0-9 $%*+\-./:] * $ /,f=1,c=0,s=3,h=2,v=[],p=[-1],g=0,d=1;255>g;++g)v.push(d),p[d]=g,d=2*d^(128>d?0:285);for(var m=[[]],g=0;30>g;++g){for(var w=m[g],b=[],x=0;g>=x;++x){var F=g>x?v[w[x]]:0,A=v[(g+(w[x-1]||0))%255];b.push(p[F^A])}m.push(b)}for(var C={},g=0;45>g;++g)C["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:".charAt(g)]=g;var N=[function(r,t){return(r+t)%2==0},function(r){return r%2==0},function(r,t){return t%3==0},function(r,t){return(r+t)%3==0},function(r,t){return((r/2|0)+(t/3|0))%2==0},function(r,t){return r*t%2+r*t%3==0},function(r,t){return(r*t%2+r*t%3)%2==0},function(r,t){return((r+t)%2+r*t%3)%2==0}],S=function(r){return r>6},y=function(r){return 4*r+17},M=function(t){var e=r[t],n=16*t*t+128*t+64;return S(t)&&(n-=36),e[2].length&&(n-=25*e[2].length*e[2].length-10*e[2].length-55),n},E=function(t,e){var n=-8&M(t),a=r[t];return n-=8*a[0][e]*a[1][e]},k=function(r,t){switch(t){case e:return 10>r?10:27>r?12:14;case n:return 10>r?9:27>r?11:13;case a:return 10>r?8:16;case o:return 10>r?8:27>r?10:12}},L=function(r,t,u){var l=E(r,u)-4-k(r,t);switch(t){case e:return 3*(l/10|0)+(4>l%10?0:7>l%10?1:2);case n:return 2*(l/11|0)+(6>l%11?0:1);case a:return l/8|0;case o:return l/13|0}},R=function(r,t){switch(r){case e:return t.match(u)?t:null;case n:return t.match(l)?t.toUpperCase():null;case a:if("string"==typeof t){for(var o=[],i=0;i<t.length;++i){var f=t.charCodeAt(i);128>f?o.push(f):2048>f?o.push(192|f>>6,128|63&f):65536>f?o.push(224|f>>12,128|f>>6&63,128|63&f):o.push(240|f>>18,128|f>>12&63,128|f>>6&63,128|63&f)}return o}return t}},$=function(r,o,u,l){var i=[],f=0,c=8,s=u.length,h=function(r,t){if(t>=c){for(i.push(f|r>>(t-=c));t>=8;)i.push(r>>(t-=8)&255);f=0,c=8}t>0&&(f|=(r&(1<<t)-1)<<(c-=t))},v=k(r,o);switch(h(o,4),h(s,v),o){case e:for(var p=2;s>p;p+=3)h(parseInt(u.substring(p-2,p+1),10),10);h(parseInt(u.substring(p-2),10),[0,4,7][s%3]);break;case n:for(var p=1;s>p;p+=2)h(45*C[u.charAt(p-1)]+C[u.charAt(p)],11);s%2==1&&h(C[u.charAt(p-1)],6);break;case a:for(var p=0;s>p;++p)h(u[p],8)}for(h(t,4),8>c&&i.push(f);i.length+1<l;)i.push(236,17);return i.length<l&&i.push(236),i},z=function(r,t){for(var e=r.slice(0),n=r.length,a=t.length,o=0;a>o;++o)e.push(0);for(var o=0;n>o;){var u=p[e[o++]];if(u>=0)for(var l=0;a>l;++l)e[o+l]^=v[(u+t[l])%255]}return e.slice(n)},G=function(r,t,e){for(var n=[],a=r.length/t|0,o=0,u=t-r.length%t,l=0;u>l;++l)n.push(o),o+=a;for(var l=u;t>l;++l)n.push(o),o+=a+1;n.push(o);for(var i=[],l=0;t>l;++l)i.push(z(r.slice(n[l],n[l+1]),e));for(var f=[],c=r.length/t|0,l=0;c>l;++l)for(var s=0;t>s;++s)f.push(r[n[s]+l]);for(var s=u;t>s;++s)f.push(r[n[s+1]-1]);for(var l=0;l<e.length;++l)for(var s=0;t>s;++s)f.push(i[s][l]);return f},U=function(r,t,e,n){for(var a=r<<n,o=t-1;o>=0;--o)a>>n+o&1&&(a^=e<<o);return r<<n|a},D=function(t){for(var e=r[t],n=y(t),a=[],o=[],u=0;n>u;++u)a.push([]),o.push([]);var l=function(r,t,e,n,u){for(var l=0;e>l;++l)for(var i=0;n>i;++i)a[r+l][t+i]=u[l]>>i&1,o[r+l][t+i]=1};l(0,0,9,9,[127,65,93,93,93,65,383,0,64]),l(n-8,0,8,9,[256,127,65,93,93,93,65,127]),l(0,n-8,9,8,[254,130,186,186,186,130,254,0,0]);for(var u=9;n-8>u;++u)a[6][u]=a[u][6]=1&~u,o[6][u]=o[u][6]=1;for(var i=e[2],f=i.length,u=0;f>u;++u)for(var c=0==u||u==f-1?1:0,s=0==u?f-1:f,h=c;s>h;++h)l(i[u],i[h],5,5,[31,17,21,17,31]);if(S(t))for(var v=U(t,6,7973,12),p=0,u=0;6>u;++u)for(var h=0;3>h;++h)a[u][n-11+h]=a[n-11+h][u]=v>>p++&1,o[u][n-11+h]=o[n-11+h][u]=1;return{matrix:a,reserved:o}},H=function(r,t,e){for(var n=r.length,a=0,o=-1,u=n-1;u>=0;u-=2){6==u&&--u;for(var l=0>o?n-1:0,i=0;n>i;++i){for(var f=u;f>u-2;--f)t[l][f]||(r[l][f]=e[a>>3]>>(7&~a)&1,++a);l+=o}o=-o}return r},I=function(r,t,e){for(var n=N[e],a=r.length,o=0;a>o;++o)for(var u=0;a>u;++u)t[o][u]||(r[o][u]^=n(o,u));return r},P=function(r,t,e,n){for(var a=r.length,o=21522^U(e<<3|n,5,1335,10),u=0;15>u;++u){var l=[0,1,2,3,4,5,7,8,a-7,a-6,a-5,a-4,a-3,a-2,a-1][u],i=[a-1,a-2,a-3,a-4,a-5,a-6,a-7,a-8,7,5,4,3,2,1,0][u];r[l][8]=r[8][i]=o>>u&1}return r},Q=function(r){for(var t=3,e=3,n=40,a=10,o=function(r){for(var e=0,a=0;a<r.length;++a)r[a]<5||(e+=t+(r[a]-5));for(var a=5;a<r.length;a+=2){var o=r[a];r[a-1]!=o||r[a-2]!=3*o||r[a-3]!=o||r[a-4]!=o||r[a-5]<4*o&&r[a+1]<4*o||(e+=n)}return e},u=r.length,l=0,i=0,f=0;u>f;++f){var c,s=r[f];c=[0];for(var h=0;u>h;){var v;for(v=0;u>h&&s[h];++v)++h;for(c.push(v),v=0;u>h&&!s[h];++v)++h;c.push(v)}l+=o(c),c=[0];for(var h=0;u>h;){var v;for(v=0;u>h&&r[h][f];++v)++h;for(c.push(v),v=0;u>h&&!r[h][f];++v)++h;c.push(v)}l+=o(c);var p=r[f+1]||[];i+=s[0];for(var h=1;u>h;++h){var g=s[h];i+=g,s[h-1]==g&&p[h]===g&&p[h-1]===g&&(l+=e)}}return l+=a*(Math.abs(i/u/u-.5)/.05|0)},T=function(t,e,n,a,o){var u=r[e],l=$(e,n,t,E(e,a)>>3);l=G(l,u[1][a],m[u[0][a]]);var i=D(e),f=i.matrix,c=i.reserved;if(H(f,c,l),0>o){I(f,c,0),P(f,c,a,0);var s=0,h=Q(f);for(I(f,c,0),o=1;8>o;++o){I(f,c,o),P(f,c,a,o);var v=Q(f);h>v&&(h=v,s=o),I(f,c,o)}o=s}return I(f,c,o),P(f,c,a,o),f},Z={generate:function(r,t){var o={numeric:e,alphanumeric:n,octet:a},l={L:f,M:c,Q:s,H:h};t=t||{};var v=t.version||-1,p=l[(t.ecclevel||"L").toUpperCase()],g=t.mode?o[t.mode.toLowerCase()]:-1,d="mask"in t?t.mask:-1;if(0>g)g="string"==typeof r?r.match(u)?e:r.match(i)?n:a:a;else if(g!=e&&g!=n&&g!=a)throw"invalid or unsupported mode";if(r=R(g,r),null===r)throw"invalid data format";if(0>p||p>3)throw"invalid ECC level";if(0>v){for(v=1;40>=v&&r.length>L(v,g,p);++v);if(v>40)throw"too large data"}else if(1>v||v>40)throw"invalid version";if(-1!=d&&(0>d||d>8))throw"invalid mask";return T(r,v,g,p,d)},generateHTML:function(r,t){t=t||{};for(var e=t.fillcolor?t.fillcolor:"#FFFFFF",n=t.textcolor?t.textcolor:"#000000",a=Z.generate(r,t),o=Math.max(t.modulesize||5,.5),u=Math.max(null!==t.margin?t.margin:4,0),l=document.createElement("div"),i=a.length,f=['<table border="0" cellspacing="0" cellpadding="0" style="border:'+o*u+"px solid "+e+";background:"+e+'">'],c=0;i>c;++c){f.push("<tr>");for(var s=0;i>s;++s)f.push('<td style="width:'+o+"px;height:"+o+"px"+(a[c][s]?";background:"+n:"")+'"></td>');f.push("</tr>")}l.className="qrcode";var h=document.createRange();h.selectNodeContents(l);var v=h.createContextualFragment(f.join("")+"</table>");return l.appendChild(v),l},generateSVG:function(r,t){t=t||{};var e=t.fillcolor?t.fillcolor:"#FFFFFF",n=t.textcolor?t.textcolor:"#000000",a=Z.generate(r,t),o=a.length,u=Math.max(t.modulesize||5,.5),l=Math.max(t.margin?t.margin:4,0),i=u*(o+2*l),f=document.createElementNS("http://www.w3.org/2000/svg","svg");f.setAttribute("viewBox","0 0 "+i+" "+i),f.setAttribute("style","shape-rendering:crispEdges");var c=document.createDocumentFragment(),s=document.createElementNS("http://www.w3.org/2000/svg","style");s.appendChild(document.createTextNode(".bg{fill:"+e+"}.fg{fill:"+n+"}")),s.setAttribute("scoped","scoped"),c.appendChild(s);var h=function(r,t,e,n,a){var o=document.createElementNS("http://www.w3.org/2000/svg","rect")||"";return o.setAttributeNS(null,"class",r),o.setAttributeNS(null,"fill",t),o.setAttributeNS(null,"x",e),o.setAttributeNS(null,"y",n),o.setAttributeNS(null,"width",a),o.setAttributeNS(null,"height",a),o};c.appendChild(h("bg","none",0,0,i));for(var v=l*u,p=0;o>p;++p){for(var g=l*u,d=0;o>d;++d)a[p][d]&&c.appendChild(h("fg","none",g,v,u)),g+=u;v+=u}return f.appendChild(c),f},generatePNG:function(r,t){t=t||{};var e,n=t.fillcolor?t.fillcolor:"#FFFFFF",a=t.textcolor?t.textcolor:"#000000",o=Z.generate(r,t),u=Math.max(t.modulesize||5,.5),l=Math.max(null!=t.margin?t.margin:4,0),i=o.length,f=u*(i+2*l),c=document.createElement("canvas");if(c.width=c.height=f,e=c.getContext("2d"),!e)throw"canvas support is needed for PNG output";e.fillStyle=n,e.fillRect(0,0,f,f),e.fillStyle=a;for(var s=0;i>s;++s)for(var h=0;i>h;++h)o[s][h]&&e.fillRect(u*(l+h),u*(l+s),u,u);return c.toDataURL()}};return Z});
var svgElement = document.createElement("div"),
u = "https://github.com",
s = QRCode.generateSVG(u, {	ecclevel: "M",	fillcolor: "#FFFFFF",	textcolor: "#373737",	margin: 4,	modulesize: 8	});
svgElement.appendChild(s);
document.body.appendChild(svgElement);
if (document.implementation.hasFeature("http://www.w3.org/2000/svg","1.1")) {	var dataUriSvgImage = document.createElement("img"),	u = "https://github.com",	s = QRCode.generateSVG(u, {	ecclevel: "M",	fillcolor: "#FFFFFF",	textcolor: "#373737",	margin: 4,	modulesize: 8	});	var XMLS = new XMLSerializer();	s = XMLS.serializeToString(s);	s = "data:image/svg+xml;base64," + window.btoa(unescape(encodeURIComponent(s)));	dataUriSvgImage.src = s;	document.body.appendChild(dataUriSvgImage);
}
var dataUriPngImage = document.createElement("img"),
u = "https://github.com",
s = QRCode.generatePNG(u, {	ecclevel: "M",	format: "html",	fillcolor: "#FFFFFF",	textcolor: "#373737",	margin: 4,	modulesize: 8	});
dataUriPngImage.src = s;
document.body.appendChild(dataUriPngImage);
var htmlTable = document.createElement("div"),
u = "https://github.com",
s = QRCode.generateHTML(u, {	ecclevel: "M",	fillcolor: "#FFFFFF",	textcolor: "#373737",	margin: 4,	modulesize: 8	});
htmlTable.appendChild(s);
document.body.appendChild(htmlTable);
QR code generating with vanilla js - Script Codes
QR code generating with vanilla js - Script Codes
Home Page Home
Developer Englishextra
Username englishextra
Uploaded January 17, 2023
Rating 3
Size 5,758 Kb
Views 8,092
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