20 lines
618 B
JavaScript
20 lines
618 B
JavaScript
var keyboardNavigation = false,
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keyboardNavigationKeycodes = [ 9, 32, 37, 38, 39, 40 ]; // keyCodes for tab, space, left, up, right, down respectively
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document.addEventListener( 'keydown', function( event ) {
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if ( keyboardNavigation ) {
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return;
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}
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if ( keyboardNavigationKeycodes.indexOf( event.keyCode ) !== -1 ) {
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keyboardNavigation = true;
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document.documentElement.classList.add( 'accessible-focus' );
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}
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} );
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document.addEventListener( 'mouseup', function() {
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if ( ! keyboardNavigation ) {
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return;
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}
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keyboardNavigation = false;
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document.documentElement.classList.remove( 'accessible-focus' );
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} );
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