MediaWiki:SupportPage.js
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/*
* MediaWiki:SupportPage.js
* Loaded by MediaWiki:Common.js on support pages e.g. "Problems donating"
*/
$(function() {
/* -- table of contents code -- */
// Build a list of corresponding toc links and anchors
var toc = [];
$('#toc > ul a').each( function() {
var id = $(this).attr('href').replace('#', '');
toc.push({
link: $(this),
anchor: $( document.getElementById(id) )
});
});
// Add smooth scrolling effect
var scrollOffset = 24, // Offset in px
scrollDuration = 500, // in ms
smoothScroll = function(event) {
var offsetTop = event.data.anchor.offset().top;
$('html, body').stop().animate({
scrollTop: offsetTop - scrollOffset
}, scrollDuration);
event.preventDefault();
};
for (var i = 0; i < toc.length; i++) {
toc[i].link.on( 'click', toc[i], smoothScroll );
}
// Highlight current section in toc
var lastSection;
$(window).scroll(function() {
var fromTop = $(this).scrollTop(); // Get container scroll position
var currentSection = toc.filter(function(item) {
return fromTop > item.anchor.offset().top - 64;
});
currentSection = currentSection[currentSection.length - 1];
if ( lastSection !== currentSection ) {
lastSection = currentSection;
$('#toc > ul a').removeClass('-active');
currentSection.link.addClass('-active');
}
});
/* -- end of table of contents code -- */
});