51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/*
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* Top bar title auto change while scrolling in mobile screens.
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* v2.0
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* https://github.com/cotes2020/jekyll-theme-chirpy
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* © 2018-2019 Cotes Chung
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* MIT License
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*/
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$(function() {
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const topbarTitle = $("#topbar-title");
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const postTitle = $("div.post>h1");
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const DEFAULT = topbarTitle.text().trim();
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let title = (postTitle.length > 0) ?
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postTitle.text().trim() : $("h1").text().trim();
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if ($("#page-category").length || $("#page-tag").length) {
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/* The title in Category or Tag page will be "<title> <count_of_posts>" */
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if (/\s/.test(title)) {
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title = title.replace(/[0-9]/g, "").trim();
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}
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}
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/* Replace topbar title while scroll screens. */
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$(window).scroll(function () {
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if ($("#post-list").length /* in Home page */
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|| postTitle.is(":hidden") /* is tab pages */
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|| topbarTitle.is(":hidden") /* not mobile screens */
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|| $("#sidebar.sidebar-expand").length) { /* when the sidebar trigger is clicked */
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return false;
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}
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if ($(this).scrollTop() >= 95) {
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if (topbarTitle.text() !== title) {
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topbarTitle.text(title);
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}
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} else {
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if (topbarTitle.text() !== DEFAULT) {
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topbarTitle.text(DEFAULT);
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}
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}
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});
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/* Click title remove hover effect. */
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topbarTitle.click(function() {
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$("body,html").animate({scrollTop: 0}, 800);
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});
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});
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