From 761ecaa0c94bb45309ea1288b98736c712779a56 Mon Sep 17 00:00:00 2001
From: Lars Jung <lrsjng@gmail.com>
Date: Fri, 27 May 2016 00:25:19 +0200
Subject: [PATCH] Maintenance.

---
 dist/jquery-qrcode.js     |  95 ++++++++++++++++++++------------------
 dist/jquery-qrcode.min.js |   4 +-
 package.json              |   2 +-
 src/.eslintrc             |   1 -
 src/demo/dummy.png        | Bin 13052 -> 2957 bytes
 src/demo/scripts.js       |  69 +++++++++++++--------------
 src/jquery-qrcode.js      |  93 +++++++++++++++++++------------------
 7 files changed, 135 insertions(+), 129 deletions(-)

diff --git a/dist/jquery-qrcode.js b/dist/jquery-qrcode.js
index a191c01..b87e884 100644
--- a/dist/jquery-qrcode.js
+++ b/dist/jquery-qrcode.js
@@ -1,19 +1,27 @@
-/*! jquery-qrcode v0.13.4 - https://larsjung.de/jquery-qrcode/ */
+/*! jquery-qrcode v0.14.0 - https://larsjung.de/jquery-qrcode/ */
 (function (vendor_qrcode) {
     'use strict';
 
-    var $ = jQuery; // eslint-disable-line no-undef
+    var jq = window.jQuery;
+
+    // Check if canvas is available in the browser (as Modernizr does)
+    var hasCanvas = (function () {
+        var elem = document.createElement('canvas');
+        return !!(elem.getContext && elem.getContext('2d'));
+    }());
 
     // Wrapper for the original QR code generator.
-    function QRCode(text, level, version, quiet) {
-        var qr = vendor_qrcode(version, level);
-        qr.addData(text);
-        qr.make();
+    function createQRCode(text, level, version, quiet) {
+        var qr = {};
+
+        var vqr = vendor_qrcode(version, level);
+        vqr.addData(text);
+        vqr.make();
 
         quiet = quiet || 0;
 
-        var qrModuleCount = qr.getModuleCount();
-        var quietModuleCount = qr.getModuleCount() + 2 * quiet;
+        var qrModuleCount = vqr.getModuleCount();
+        var quietModuleCount = vqr.getModuleCount() + 2 * quiet;
 
         function isDark(row, col) {
             row -= quiet;
@@ -22,15 +30,14 @@
             if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
                 return false;
             }
-
-            return qr.isDark(row, col);
+            return vqr.isDark(row, col);
         }
 
-        var addBlank = function (l, t, r, b) {
-            var prevIsDark = this.isDark; // eslint-disable-line no-invalid-this
+        function addBlank(l, t, r, b) {
+            var prevIsDark = qr.isDark;
             var moduleSize = 1 / quietModuleCount;
 
-            this.isDark = function (row, col) { // eslint-disable-line no-invalid-this
+            qr.isDark = function (row, col) {
                 var ml = col * moduleSize;
                 var mt = row * moduleSize;
                 var mr = ml + moduleSize;
@@ -38,39 +45,35 @@
 
                 return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
             };
-        };
+        }
 
-        this.text = text;
-        this.level = level;
-        this.version = version;
-        this.moduleCount = quietModuleCount;
-        this.isDark = isDark;
-        this.addBlank = addBlank;
-    }
+        qr.text = text;
+        qr.level = level;
+        qr.version = version;
+        qr.moduleCount = quietModuleCount;
+        qr.isDark = isDark;
+        qr.addBlank = addBlank;
 
-    // Check if canvas is available in the browser (as Modernizr does)
-    var hasCanvas = (function () {
-        var elem = document.createElement('canvas');
-        return Boolean(elem.getContext && elem.getContext('2d'));
-    }());
+        return qr;
+    }
 
     // Returns a minimal QR code for the given text starting with version `minVersion`.
     // Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
-    function createQRCode(text, level, minVersion, maxVersion, quiet) {
+    function createMinQRCode(text, level, minVersion, maxVersion, quiet) {
         minVersion = Math.max(1, minVersion || 1);
         maxVersion = Math.min(40, maxVersion || 40);
         for (var version = minVersion; version <= maxVersion; version += 1) {
             try {
-                return new QRCode(text, level, version, quiet);
+                return createQRCode(text, level, version, quiet);
             } catch (err) {/* empty */}
         }
-        return null;
+        return undefined;
     }
 
     function drawBackgroundLabel(qr, context, settings) {
         var size = settings.size;
-        var font = 'bold ' + (settings.mSize * size) + 'px ' + settings.fontname;
-        var ctx = $('<canvas/>')[0].getContext('2d');
+        var font = 'bold ' + settings.mSize * size + 'px ' + settings.fontname;
+        var ctx = jq('<canvas/>')[0].getContext('2d');
 
         ctx.font = font;
 
@@ -120,7 +123,7 @@
     }
 
     function drawBackground(qr, context, settings) {
-        if ($(settings.background).is('img')) {
+        if (jq(settings.background).is('img')) {
             context.drawImage(settings.background, 0, 0, settings.size, settings.size);
         } else if (settings.background) {
             context.fillStyle = settings.background;
@@ -254,7 +257,7 @@
                 fn(qr, context, settings, l, t, w, row, col);
             }
         }
-        if ($(settings.fill).is('img')) {
+        if (jq(settings.fill).is('img')) {
             context.strokeStyle = 'rgba(0,0,0,0.5)';
             context.lineWidth = 2;
             context.stroke();
@@ -274,12 +277,12 @@
 
     // Draws QR code to the given `canvas` and returns it.
     function drawOnCanvas(canvas, settings) {
-        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
+        var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
         if (!qr) {
             return null;
         }
 
-        var $canvas = $(canvas).data('qrcode', qr);
+        var $canvas = jq(canvas).data('qrcode', qr);
         var context = $canvas[0].getContext('2d');
 
         drawBackground(qr, context, settings);
@@ -290,18 +293,18 @@
 
     // Returns a `canvas` element representing the QR code for the given settings.
     function createCanvas(settings) {
-        var $canvas = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
+        var $canvas = jq('<canvas/>').attr('width', settings.size).attr('height', settings.size);
         return drawOnCanvas($canvas, settings);
     }
 
     // Returns an `image` element representing the QR code for the given settings.
     function createImage(settings) {
-        return $('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
+        return jq('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
     }
 
     // Returns a `div` element representing the QR code for the given settings.
     function createDiv(settings) {
-        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
+        var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
         if (!qr) {
             return null;
         }
@@ -336,7 +339,7 @@
             'background-color': settings.fill
         };
 
-        var $div = $('<div/>').data('qrcode', qr).css(containerCSS);
+        var $div = jq('<div/>').data('qrcode', qr).css(containerCSS);
 
         if (settings_bgColor) {
             $div.css('background-color', settings_bgColor);
@@ -345,7 +348,7 @@
         for (row = 0; row < moduleCount; row += 1) {
             for (col = 0; col < moduleCount; col += 1) {
                 if (qr.isDark(row, col)) {
-                    $('<div/>')
+                    jq('<div/>')
                         .css(darkCSS)
                         .css({
                             left: offset + col * moduleSize,
@@ -428,14 +431,14 @@
 
     // Register the plugin
     // -------------------
-    $.fn.qrcode = function (options) {
-        var settings = $.extend({}, defaults, options);
+    jq.fn.qrcode = function (options) {
+        var settings = jq.extend({}, defaults, options);
 
-        return this.each(function () {
-            if (this.nodeName.toLowerCase() === 'canvas') { // eslint-disable-line no-invalid-this
-                drawOnCanvas(this, settings); // eslint-disable-line no-invalid-this
+        return this.each(function (idx, el) {
+            if (el.nodeName.toLowerCase() === 'canvas') {
+                drawOnCanvas(el, settings);
             } else {
-                $(this).append(createHTML(settings)); // eslint-disable-line no-invalid-this
+                jq(el).append(createHTML(settings));
             }
         });
     };
diff --git a/dist/jquery-qrcode.min.js b/dist/jquery-qrcode.min.js
index b89cce6..f718c22 100644
--- a/dist/jquery-qrcode.min.js
+++ b/dist/jquery-qrcode.min.js
@@ -1,2 +1,2 @@
-/*! jquery-qrcode v0.13.4 - https://larsjung.de/jquery-qrcode/ */
-!function(r){"use strict";function t(t,e,n,o){function i(r,t){return r-=o,t-=o,0>r||r>=u||0>t||t>=u?!1:a.isDark(r,t)}var a=r(n,e);a.addData(t),a.make(),o=o||0;var u=a.getModuleCount(),f=a.getModuleCount()+2*o,c=function(r,t,e,n){var o=this.isDark,i=1/f;this.isDark=function(a,u){var f=u*i,c=a*i,l=f+i,g=c+i;return o(a,u)&&(r>l||f>e||t>g||c>n)}};this.text=t,this.level=e,this.version=n,this.moduleCount=f,this.isDark=i,this.addBlank=c}function e(r,e,n,o,i){n=Math.max(1,n||1),o=Math.min(40,o||40);for(var a=n;o>=a;a+=1)try{return new t(r,e,a,i)}catch(u){}return null}function n(r,t,e){var n=e.size,o="bold "+e.mSize*n+"px "+e.fontname,i=w("<canvas/>")[0].getContext("2d");i.font=o;var a=i.measureText(e.label).width,u=e.mSize,f=a/n,c=(1-f)*e.mPosX,l=(1-u)*e.mPosY,g=c+f,s=l+u,h=.01;1===e.mode?r.addBlank(0,l-h,n,s+h):r.addBlank(c-h,l-h,g+h,s+h),t.fillStyle=e.fontcolor,t.font=o,t.fillText(e.label,c*n,l*n+.75*e.mSize*n)}function o(r,t,e){var n=e.size,o=e.image.naturalWidth||1,i=e.image.naturalHeight||1,a=e.mSize,u=a*o/i,f=(1-u)*e.mPosX,c=(1-a)*e.mPosY,l=f+u,g=c+a,s=.01;3===e.mode?r.addBlank(0,c-s,n,g+s):r.addBlank(f-s,c-s,l+s,g+s),t.drawImage(e.image,f*n,c*n,u*n,a*n)}function i(r,t,e){w(e.background).is("img")?t.drawImage(e.background,0,0,e.size,e.size):e.background&&(t.fillStyle=e.background,t.fillRect(e.left,e.top,e.size,e.size));var i=e.mode;1===i||2===i?n(r,t,e):(3===i||4===i)&&o(r,t,e)}function a(r,t,e,n,o,i,a,u){r.isDark(a,u)&&t.rect(n,o,i,i)}function u(r,t,e,n,o,i,a,u,f,c){a?r.moveTo(t+i,e):r.moveTo(t,e),u?(r.lineTo(n-i,e),r.arcTo(n,e,n,o,i)):r.lineTo(n,e),f?(r.lineTo(n,o-i),r.arcTo(n,o,t,o,i)):r.lineTo(n,o),c?(r.lineTo(t+i,o),r.arcTo(t,o,t,e,i)):r.lineTo(t,o),a?(r.lineTo(t,e+i),r.arcTo(t,e,n,e,i)):r.lineTo(t,e)}function f(r,t,e,n,o,i,a,u,f,c){a&&(r.moveTo(t+i,e),r.lineTo(t,e),r.lineTo(t,e+i),r.arcTo(t,e,t+i,e,i)),u&&(r.moveTo(n-i,e),r.lineTo(n,e),r.lineTo(n,e+i),r.arcTo(n,e,n-i,e,i)),f&&(r.moveTo(n-i,o),r.lineTo(n,o),r.lineTo(n,o-i),r.arcTo(n,o,n-i,o,i)),c&&(r.moveTo(t+i,o),r.lineTo(t,o),r.lineTo(t,o-i),r.arcTo(t,o,t+i,o,i))}function c(r,t,e,n,o,i,a,c){var l=r.isDark,g=n+i,s=o+i,h=e.radius*i,v=a-1,d=a+1,w=c-1,m=c+1,y=l(a,c),T=l(v,w),p=l(v,c),B=l(v,m),A=l(a,m),E=l(d,m),k=l(d,c),M=l(d,w),C=l(a,w);y?u(t,n,o,g,s,h,!p&&!C,!p&&!A,!k&&!A,!k&&!C):f(t,n,o,g,s,h,p&&C&&T,p&&A&&B,k&&A&&E,k&&C&&M)}function l(r,t,e){var n,o,i=r.moduleCount,u=e.size/i,f=a;for(e.radius>0&&e.radius<=.5&&(f=c),t.beginPath(),n=0;i>n;n+=1)for(o=0;i>o;o+=1){var l=e.left+o*u,g=e.top+n*u,s=u;f(r,t,e,l,g,s,n,o)}if(w(e.fill).is("img")){t.strokeStyle="rgba(0,0,0,0.5)",t.lineWidth=2,t.stroke();var 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diff --git a/package.json b/package.json
index bfcd371..b1f5771 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jquery-qrcode",
   "displayName": "jQuery.qrcode",
-  "version": "0.13.4",
+  "version": "0.14.0",
   "description": "Generate QR codes dynamically.",
   "homepage": "https://larsjung.de/jquery-qrcode/",
   "bugs": "https://github.com/lrsjng/jquery-qrcode/issues",
diff --git a/src/.eslintrc b/src/.eslintrc
index e910b46..68f09f0 100644
--- a/src/.eslintrc
+++ b/src/.eslintrc
@@ -4,7 +4,6 @@
 
   rules:
     func-names: 0
-    func-style: 0
     no-var: 0
     prefer-arrow-callback: 0
     strict: 0
diff --git a/src/demo/dummy.png b/src/demo/dummy.png
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diff --git a/src/demo/scripts.js b/src/demo/scripts.js
index fdb1802..1f71fce 100644
--- a/src/demo/scripts.js
+++ b/src/demo/scripts.js
@@ -1,7 +1,7 @@
 (function () {
     'use strict';
 
-    var $ = jQuery; // eslint-disable-line no-undef
+    var jq = window.jQuery;
     var guiValuePairs = [
         ['size', 'px'],
         ['minversion', ''],
@@ -13,41 +13,41 @@
     ];
 
     function updateGui() {
-        $.each(guiValuePairs, function (idx, pair) {
-            var $label = $('label[for="' + pair[0] + '"]');
-            $label.text($label.text().replace(/:.*/, ': ' + $('#' + pair[0]).val() + pair[1]));
+        jq.each(guiValuePairs, function (idx, pair) {
+            var $label = jq('label[for="' + pair[0] + '"]');
+            $label.text($label.text().replace(/:.*/, ': ' + jq('#' + pair[0]).val() + pair[1]));
         });
     }
 
     function updateQrCode() {
         var options = {
-            render: $('#render').val(),
-            ecLevel: $('#eclevel').val(),
-            minVersion: parseInt($('#minversion').val(), 10),
+            render: jq('#render').val(),
+            ecLevel: jq('#eclevel').val(),
+            minVersion: parseInt(jq('#minversion').val(), 10),
 
-            fill: $('#fill').val(),
-            background: $('#background').val(),
-            // fill: $('#img-buffer')[0],
+            fill: jq('#fill').val(),
+            background: jq('#background').val(),
+            // fill: jq('#img-buffer')[0],
 
-            text: $('#text').val(),
-            size: parseInt($('#size').val(), 10),
-            radius: parseInt($('#radius').val(), 10) * 0.01,
-            quiet: parseInt($('#quiet').val(), 10),
+            text: jq('#text').val(),
+            size: parseInt(jq('#size').val(), 10),
+            radius: parseInt(jq('#radius').val(), 10) * 0.01,
+            quiet: parseInt(jq('#quiet').val(), 10),
 
-            mode: parseInt($('#mode').val(), 10),
+            mode: parseInt(jq('#mode').val(), 10),
 
-            mSize: parseInt($('#msize').val(), 10) * 0.01,
-            mPosX: parseInt($('#mposx').val(), 10) * 0.01,
-            mPosY: parseInt($('#mposy').val(), 10) * 0.01,
+            mSize: parseInt(jq('#msize').val(), 10) * 0.01,
+            mPosX: parseInt(jq('#mposx').val(), 10) * 0.01,
+            mPosY: parseInt(jq('#mposy').val(), 10) * 0.01,
 
-            label: $('#label').val(),
-            fontname: $('#font').val(),
-            fontcolor: $('#fontcolor').val(),
+            label: jq('#label').val(),
+            fontname: jq('#font').val(),
+            fontcolor: jq('#fontcolor').val(),
 
-            image: $('#img-buffer')[0]
+            image: jq('#img-buffer')[0]
         };
 
-        $('#container').empty().qrcode(options);
+        jq('#container').empty().qrcode(options);
     }
 
     function update() {
@@ -56,12 +56,12 @@
     }
 
     function onImageInput() {
-        var input = $('#image')[0];
+        var input = jq('#image')[0];
         if (input.files && input.files[0]) {
             var reader = new FileReader();
             reader.onload = function (event) {
-                $('#img-buffer').attr('src', event.target.result);
-                $('#mode').val('4');
+                jq('#img-buffer').attr('src', event.target.result);
+                jq('#mode').val('4');
                 setTimeout(update, 250);
             };
             reader.readAsDataURL(input.files[0]);
@@ -69,15 +69,16 @@
     }
 
     function download() {
-        $('#download').attr('href', $('#container canvas')[0].toDataURL('image/png'));
+        jq('#download').attr('href', jq('#container canvas')[0].toDataURL('image/png'));
     }
 
-
-    $(function () {
-        $('#download').on('click', download);
-        $('#image').on('change', onImageInput);
-        $('input, textarea, select').on('input change', update);
-        $(window).load(update);
+    function init() {
+        jq('#download').on('click', download);
+        jq('#image').on('change', onImageInput);
+        jq('input, textarea, select').on('input change', update);
+        jq(window).load(update);
         update();
-    });
+    }
+
+    jq(init);
 }());
diff --git a/src/jquery-qrcode.js b/src/jquery-qrcode.js
index cb7631a..cbbaf9c 100644
--- a/src/jquery-qrcode.js
+++ b/src/jquery-qrcode.js
@@ -1,18 +1,26 @@
 (function (vendor_qrcode) {
     'use strict';
 
-    var $ = jQuery; // eslint-disable-line no-undef
+    var jq = window.jQuery;
+
+    // Check if canvas is available in the browser (as Modernizr does)
+    var hasCanvas = (function () {
+        var elem = document.createElement('canvas');
+        return !!(elem.getContext && elem.getContext('2d'));
+    }());
 
     // Wrapper for the original QR code generator.
-    function QRCode(text, level, version, quiet) {
-        var qr = vendor_qrcode(version, level);
-        qr.addData(text);
-        qr.make();
+    function createQRCode(text, level, version, quiet) {
+        var qr = {};
+
+        var vqr = vendor_qrcode(version, level);
+        vqr.addData(text);
+        vqr.make();
 
         quiet = quiet || 0;
 
-        var qrModuleCount = qr.getModuleCount();
-        var quietModuleCount = qr.getModuleCount() + 2 * quiet;
+        var qrModuleCount = vqr.getModuleCount();
+        var quietModuleCount = vqr.getModuleCount() + 2 * quiet;
 
         function isDark(row, col) {
             row -= quiet;
@@ -21,15 +29,14 @@
             if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
                 return false;
             }
-
-            return qr.isDark(row, col);
+            return vqr.isDark(row, col);
         }
 
-        var addBlank = function (l, t, r, b) {
-            var prevIsDark = this.isDark; // eslint-disable-line no-invalid-this
+        function addBlank(l, t, r, b) {
+            var prevIsDark = qr.isDark;
             var moduleSize = 1 / quietModuleCount;
 
-            this.isDark = function (row, col) { // eslint-disable-line no-invalid-this
+            qr.isDark = function (row, col) {
                 var ml = col * moduleSize;
                 var mt = row * moduleSize;
                 var mr = ml + moduleSize;
@@ -37,39 +44,35 @@
 
                 return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
             };
-        };
+        }
 
-        this.text = text;
-        this.level = level;
-        this.version = version;
-        this.moduleCount = quietModuleCount;
-        this.isDark = isDark;
-        this.addBlank = addBlank;
-    }
+        qr.text = text;
+        qr.level = level;
+        qr.version = version;
+        qr.moduleCount = quietModuleCount;
+        qr.isDark = isDark;
+        qr.addBlank = addBlank;
 
-    // Check if canvas is available in the browser (as Modernizr does)
-    var hasCanvas = (function () {
-        var elem = document.createElement('canvas');
-        return Boolean(elem.getContext && elem.getContext('2d'));
-    }());
+        return qr;
+    }
 
     // Returns a minimal QR code for the given text starting with version `minVersion`.
     // Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
-    function createQRCode(text, level, minVersion, maxVersion, quiet) {
+    function createMinQRCode(text, level, minVersion, maxVersion, quiet) {
         minVersion = Math.max(1, minVersion || 1);
         maxVersion = Math.min(40, maxVersion || 40);
         for (var version = minVersion; version <= maxVersion; version += 1) {
             try {
-                return new QRCode(text, level, version, quiet);
+                return createQRCode(text, level, version, quiet);
             } catch (err) {/* empty */}
         }
-        return null;
+        return undefined;
     }
 
     function drawBackgroundLabel(qr, context, settings) {
         var size = settings.size;
-        var font = 'bold ' + (settings.mSize * size) + 'px ' + settings.fontname;
-        var ctx = $('<canvas/>')[0].getContext('2d');
+        var font = 'bold ' + settings.mSize * size + 'px ' + settings.fontname;
+        var ctx = jq('<canvas/>')[0].getContext('2d');
 
         ctx.font = font;
 
@@ -119,7 +122,7 @@
     }
 
     function drawBackground(qr, context, settings) {
-        if ($(settings.background).is('img')) {
+        if (jq(settings.background).is('img')) {
             context.drawImage(settings.background, 0, 0, settings.size, settings.size);
         } else if (settings.background) {
             context.fillStyle = settings.background;
@@ -253,7 +256,7 @@
                 fn(qr, context, settings, l, t, w, row, col);
             }
         }
-        if ($(settings.fill).is('img')) {
+        if (jq(settings.fill).is('img')) {
             context.strokeStyle = 'rgba(0,0,0,0.5)';
             context.lineWidth = 2;
             context.stroke();
@@ -273,12 +276,12 @@
 
     // Draws QR code to the given `canvas` and returns it.
     function drawOnCanvas(canvas, settings) {
-        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
+        var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
         if (!qr) {
             return null;
         }
 
-        var $canvas = $(canvas).data('qrcode', qr);
+        var $canvas = jq(canvas).data('qrcode', qr);
         var context = $canvas[0].getContext('2d');
 
         drawBackground(qr, context, settings);
@@ -289,18 +292,18 @@
 
     // Returns a `canvas` element representing the QR code for the given settings.
     function createCanvas(settings) {
-        var $canvas = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
+        var $canvas = jq('<canvas/>').attr('width', settings.size).attr('height', settings.size);
         return drawOnCanvas($canvas, settings);
     }
 
     // Returns an `image` element representing the QR code for the given settings.
     function createImage(settings) {
-        return $('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
+        return jq('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
     }
 
     // Returns a `div` element representing the QR code for the given settings.
     function createDiv(settings) {
-        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
+        var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
         if (!qr) {
             return null;
         }
@@ -335,7 +338,7 @@
             'background-color': settings.fill
         };
 
-        var $div = $('<div/>').data('qrcode', qr).css(containerCSS);
+        var $div = jq('<div/>').data('qrcode', qr).css(containerCSS);
 
         if (settings_bgColor) {
             $div.css('background-color', settings_bgColor);
@@ -344,7 +347,7 @@
         for (row = 0; row < moduleCount; row += 1) {
             for (col = 0; col < moduleCount; col += 1) {
                 if (qr.isDark(row, col)) {
-                    $('<div/>')
+                    jq('<div/>')
                         .css(darkCSS)
                         .css({
                             left: offset + col * moduleSize,
@@ -427,14 +430,14 @@
 
     // Register the plugin
     // -------------------
-    $.fn.qrcode = function (options) {
-        var settings = $.extend({}, defaults, options);
+    jq.fn.qrcode = function (options) {
+        var settings = jq.extend({}, defaults, options);
 
-        return this.each(function () {
-            if (this.nodeName.toLowerCase() === 'canvas') { // eslint-disable-line no-invalid-this
-                drawOnCanvas(this, settings); // eslint-disable-line no-invalid-this
+        return this.each(function (idx, el) {
+            if (el.nodeName.toLowerCase() === 'canvas') {
+                drawOnCanvas(el, settings);
             } else {
-                $(this).append(createHTML(settings)); // eslint-disable-line no-invalid-this
+                jq(el).append(createHTML(settings));
             }
         });
     };