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Cache navLinks and filter for performance

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This commit is contained in:
Peter Dietrich
2012-07-19 16:14:40 +02:00
parent 56c0d1c4b0
commit a33542b47c
1 changed files with 4 additions and 2 deletions
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6
scripts/setup.js
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@@ -31,7 +31,8 @@
//console.log("They see me scrollin, they hatin"); //console.log("They see me scrollin, they hatin");
//clear highlighting //clear highlighting
$('.site-navigation a').removeClass("active"); var navLinks=$('.site-navigation a')
navLinks.removeClass("active");
//calc current viewport //calc current viewport
var viewTop = $(window).scrollTop(); var viewTop = $(window).scrollTop();
@@ -45,7 +46,8 @@
var eBottom = eTop + $(e).height(); var eBottom = eTop + $(e).height();
if (eTop >= viewTop) { if (eTop >= viewTop) {
if (eBottom <= viewBottom) { if (eBottom <= viewBottom) {
$('.site-navigation a[href="/#'+e.id+'"]').addClass("active"); //filter cached navLinks
navLinks.filter('[href="/#'+e.id+'"]').addClass("active");
} else { } else {
//console.log("Start skipping test with "+e.id); //console.log("Start skipping test with "+e.id);
return false; return false;