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36 lines
1.0 KiB
36 lines
1.0 KiB
/** |
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* Makes "skip to content" link work correctly in IE9, Chrome, and Opera |
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* for better accessibility. |
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* |
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* @link http://www.nczonline.net/blog/2013/01/15/fixing-skip-to-content-links/ |
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*/ |
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( function() { |
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var isWebkit = navigator.userAgent.toLowerCase().indexOf( 'webkit' ) > -1, |
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isOpera = navigator.userAgent.toLowerCase().indexOf( 'opera' ) > -1, |
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isIE = navigator.userAgent.toLowerCase().indexOf( 'msie' ) > -1; |
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if ( ( isWebkit || isOpera || isIE ) && document.getElementById && window.addEventListener ) { |
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window.addEventListener( 'hashchange', function() { |
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var id = location.hash.substring( 1 ), |
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element; |
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if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) { |
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return; |
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} |
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element = document.getElementById( id ); |
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if ( element ) { |
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if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) { |
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element.tabIndex = -1; |
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} |
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element.focus(); |
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// Repositions the window on jump-to-anchor to account for admin bar and border height. |
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window.scrollBy( 0, -53 ); |
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} |
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}, false ); |
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} |
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} )();
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