45 lines
1.1 KiB
JavaScript
Executable File
45 lines
1.1 KiB
JavaScript
Executable File
/**
|
|
* navigation.js
|
|
*
|
|
* Handles toggling the navigation menu for small screens.
|
|
*/
|
|
( function() {
|
|
var container, button, menu;
|
|
|
|
container = document.getElementById( 'site-navigation' );
|
|
if ( ! container ) {
|
|
return;
|
|
}
|
|
|
|
button = container.getElementsByTagName( 'button' )[0];
|
|
if ( 'undefined' === typeof button ) {
|
|
return;
|
|
}
|
|
|
|
menu = container.getElementsByTagName( 'ul' )[0];
|
|
|
|
// Hide menu toggle button if menu is empty and return early.
|
|
if ( 'undefined' === typeof menu ) {
|
|
button.style.display = 'none';
|
|
return;
|
|
}
|
|
|
|
menu.setAttribute( 'aria-expanded', 'false' );
|
|
|
|
if ( -1 === menu.className.indexOf( 'nav-menu' ) ) {
|
|
menu.className += ' nav-menu';
|
|
}
|
|
|
|
button.onclick = function() {
|
|
if ( -1 !== container.className.indexOf( 'toggled' ) ) {
|
|
container.className = container.className.replace( ' toggled', '' );
|
|
button.setAttribute( 'aria-expanded', 'false' );
|
|
menu.setAttribute( 'aria-expanded', 'false' );
|
|
} else {
|
|
container.className += ' toggled';
|
|
button.setAttribute( 'aria-expanded', 'true' );
|
|
menu.setAttribute( 'aria-expanded', 'true' );
|
|
}
|
|
};
|
|
} )();
|