diff --git a/.eslintrc.json b/.eslintrc.json
index 195c0ed6..a31962b9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -10,8 +10,6 @@
 	},
 	"rules": {
 		"max-len": 0,
-		"no-undef": 0,
-		"one-var": 0,
-		"vars-on-top": 0
+		"no-undef": 0
 	}
 }
diff --git a/modules/jquery.qrcode.js b/modules/jquery.qrcode.js
index 0510afe1..801aa29d 100644
--- a/modules/jquery.qrcode.js
+++ b/modules/jquery.qrcode.js
@@ -1,5 +1,7 @@
 ( function ( $ ) {
 	$.fn.qrcode = function ( options ) {
+		var createCanvas, createTable;
+
 		// if options is string,
 		if ( typeof options === 'string' ) {
 			options = { text: options };
@@ -17,28 +19,30 @@
 			foreground: '#000000'
 		}, options );
 
-		var createCanvas = function () {
+		createCanvas = function () {
+			var qrcode, canvas, ctx, tileW, tileH, row, col, w, h;
+
 			// create the qrcode itself
-			var qrcode = new QRCode( options.typeNumber, options.correctLevel );
+			qrcode = new QRCode( options.typeNumber, options.correctLevel );
 			qrcode.addData( options.text );
 			qrcode.make();
 
 			// create canvas element
-			var canvas = document.createElement( 'canvas' );
+			canvas = document.createElement( 'canvas' );
 			canvas.width = options.width;
 			canvas.height = options.height;
-			var ctx = canvas.getContext( '2d' );
+			ctx = canvas.getContext( '2d' );
 
 			// compute tileW/tileH based on options.width/options.height
-			var tileW = options.width / qrcode.getModuleCount();
-			var tileH = options.height / qrcode.getModuleCount();
+			tileW = options.width / qrcode.getModuleCount();
+			tileH = options.height / qrcode.getModuleCount();
 
 			// draw in the canvas
-			for ( var row = 0; row < qrcode.getModuleCount(); row++ ) {
-				for ( var col = 0; col < qrcode.getModuleCount(); col++ ) {
+			for ( row = 0; row < qrcode.getModuleCount(); row++ ) {
+				for ( col = 0; col < qrcode.getModuleCount(); col++ ) {
 					ctx.fillStyle = qrcode.isDark( row, col ) ? options.foreground : options.background;
-					var w = ( Math.ceil( ( col + 1 ) * tileW ) - Math.floor( col * tileW ) );
-					var h = ( Math.ceil( ( row + 1 ) * tileW ) - Math.floor( row * tileW ) );
+					w = ( Math.ceil( ( col + 1 ) * tileW ) - Math.floor( col * tileW ) );
+					h = ( Math.ceil( ( row + 1 ) * tileW ) - Math.floor( row * tileW ) );
 					ctx.fillRect( Math.round( col * tileW ), Math.round( row * tileH ), w, h );
 				}
 			}
@@ -47,14 +51,16 @@
 		};
 
 		// from Jon-Carlos Rivera (https://github.com/imbcmdth)
-		var createTable = function () {
+		createTable = function () {
+			var qrcode, $table, tileW, tileH, row, col, $row;
+
 			// create the qrcode itself
-			var qrcode = new QRCode( options.typeNumber, options.correctLevel );
+			qrcode = new QRCode( options.typeNumber, options.correctLevel );
 			qrcode.addData( options.text );
 			qrcode.make();
 
 			// create table element
-			var $table = $( '<table></table>' )
+			$table = $( '<table></table>' )
 				.css( 'width', options.width + 'px' )
 				.css( 'height', options.height + 'px' )
 				.css( 'border', '0px' )
@@ -62,14 +68,14 @@
 				.css( 'background-color', options.background );
 
 			// compute tileS percentage
-			var tileW = options.width / qrcode.getModuleCount();
-			var tileH = options.height / qrcode.getModuleCount();
+			tileW = options.width / qrcode.getModuleCount();
+			tileH = options.height / qrcode.getModuleCount();
 
 			// draw in the table
-			for ( var row = 0; row < qrcode.getModuleCount(); row++ ) {
-				var $row = $( '<tr></tr>' ).css( 'height', tileH + 'px' ).appendTo( $table );
+			for ( row = 0; row < qrcode.getModuleCount(); row++ ) {
+				$row = $( '<tr></tr>' ).css( 'height', tileH + 'px' ).appendTo( $table );
 
-				for ( var col = 0; col < qrcode.getModuleCount(); col++ ) {
+				for ( col = 0; col < qrcode.getModuleCount(); col++ ) {
 					$( '<td></td>' )
 						.css( 'width', tileW + 'px' )
 						.css( 'background-color', qrcode.isDark( row, col ) ? options.foreground : options.background )