WordPress 4.4.2-scripts

[autoinstalls/wordpress.git] / wp-includes / js / wp-emoji-loader.js

diff --git a/wp-includes/js/wp-emoji-loader.js b/wp-includes/js/wp-emoji-loader.js
index 327f66a19b913c4fab69961ed776ff3dd7cf1827..83f431cc92af5c57670cdebef5d5bcb1d93a9032 100644 (file)
--- a/wp-includes/js/wp-emoji-loader.js
+++ b/wp-includes/js/wp-emoji-loader.js
@@ -13,6 +13,7 @@
        function browserSupportsEmoji( type ) {
                var canvas = document.createElement( 'canvas' ),
                        context = canvas.getContext && canvas.getContext( '2d' ),
+                       stringFromCharCode = String.fromCharCode,
                        tone;
 
                if ( ! context || ! context.fillText ) {
@@ -37,7 +38,7 @@
                         * The first two will encode to small images (1-2KB data URLs), the third will encode
                         * to a larger image (4-5KB data URL).
                         */
-                       context.fillText( String.fromCharCode( 55356, 56806, 55356, 56826 ), 0, 0 );
+                       context.fillText( stringFromCharCode( 55356, 56806, 55356, 56826 ), 0, 0 );
                        return canvas.toDataURL().length > 3000;
                } else if ( 'diversity' === type ) {
                        /*
@@ -45,9 +46,9 @@
                         * emoji with no skin tone specified (in this case, Santa). It then adds a skin tone, and
                         * compares if the emoji rendering has changed.
                         */
-                       context.fillText( String.fromCharCode( 55356, 57221 ), 0, 0 );
+                       context.fillText( stringFromCharCode( 55356, 57221 ), 0, 0 );
                        tone = context.getImageData( 16, 16, 1, 1 ).data.toString();
-                       context.fillText( String.fromCharCode( 55356, 57221, 55356, 57343 ), 0, 0 );
+                       context.fillText( stringFromCharCode( 55356, 57221, 55356, 57343 ), 0, 0 );
                        // Chrome has issues comparing arrays, so we compare it as a  string, instead.
                        return tone !== context.getImageData( 16, 16, 1, 1 ).data.toString();
                } else {
@@ -57,13 +58,13 @@
                                 * center pixel. In browsers that don't support emoji, the character will be rendered
                                 * as an empty square, so the center pixel will be blank.
                                 */
-                               context.fillText( String.fromCharCode( 55357, 56835 ), 0, 0 );
+                               context.fillText( stringFromCharCode( 55357, 56835 ), 0, 0 );
                        } else {
                                /*
                                 * To check for Unicode 8 support, let's try rendering the most important advancement
                                 * that the Unicode Consortium have made in years: the burrito.
                                 */
-                               context.fillText( String.fromCharCode( 55356, 57135 ), 0, 0 );
+                               context.fillText( stringFromCharCode( 55356, 57135 ), 0, 0 );
                        }
                        return context.getImageData( 16, 16, 1, 1 ).data[0] !== 0;
                }