我很可能会遗漏一些东西,或者完全做错了,但这段 javascript 在 Chrome 和 Safari 中运行良好,只是在 Firefox 中运行良好。section.id (在 if 语句内部)似乎没有改变,但总是返回 section[0].id ,无论它是否符合 if 语句条件。
var localNavigation = {
showTab: function (anchortags, anchors) {
$(window).scroll(function () {
var scroller, i, section, sectionTop, sectionBottom, sectionColor, sectionTextColor, $section;
for (i = 0; i < anchors.length; i++) {
scroller = document.body.scrollTop;
section = anchors[i];
$section = $(section);
sectionColor = $section.css("background-color");
sectionTextColor = $section.css("color");
sectionTop = section.offsetTop;
sectionBottom = section.offsetTop + section.offsetHeight;
if ((scroller > sectionTop) && (scroller < sectionBottom)) {
$(anchortags).removeClass("selected").css({
"background-color": "transparent",
"color": "#f5eeed"
});
$("#" + section.id + "_tab").addClass("selected").css({
"background-color": "" + sectionColor + "",
"color": "" + sectionTextColor + ""
});
console.log(section.id);
}
}
});
},
init: function () {
var anchortags = $("#local ul li a"),
anchors = $("section");
localNavigation.showTab(anchortags, anchors);
}
};
localNavigation.init();