https://digi-ken.org/wp-content/plugins/pz-linkcard/js/excerpt-fit.js?ver=2.6.1

1(function () {
2	'use strict';
3
4	const selector = '.lkc-content .lkc-excerpt';
5
6	function getLineHeight(style) {
7		const lineHeight = parseFloat(style.lineHeight);
8		if (Number.isFinite(lineHeight) && lineHeight > 0) {
9			return lineHeight;
10		}
11
12		const fontSize = parseFloat(style.fontSize);
13		return Number.isFinite(fontSize) && fontSize > 0 ? fontSize * 1.2 : 16;
14	}
15
16	function fitExcerpt(excerpt) {
17		const content = excerpt.closest('.lkc-content');
18		if (!content) {
19			return;
20		}
21
22		excerpt.style.maxHeight = '';
23
24		const contentStyle = window.getComputedStyle(content);
25		if (contentStyle.overflowY === 'visible' && contentStyle.overflow === 'visible') {
26			return;
27		}
28
29		const excerptStyle = window.getComputedStyle(excerpt);
30		const lineHeight = getLineHeight(excerptStyle);
31		const contentRect = content.getBoundingClientRect();
32		const excerptRect = excerpt.getBoundingClientRect();
33		const paddingTop = parseFloat(excerptStyle.paddingTop) || 0;
34		const paddingBottom = parseFloat(excerptStyle.paddingBottom) || 0;
35		const borderTop = parseFloat(excerptStyle.borderTopWidth) || 0;
36		const borderBottom = parseFloat(excerptStyle.borderBottomWidth) || 0;
37		const reservedHeight = paddingTop + paddingBottom + borderTop + borderBottom;
38		const available = contentRect.bottom - excerptRect.top - reservedHeight;
39		const lines = Math.floor(available / lineHeight);
40
41		if (lines <= 0) {
42			excerpt.style.maxHeight = '0px';
43			return;
44		}
45
46		const maxHeight = lines * lineHeight + (excerptStyle.boxSizing === 'border-box' ? reservedHeight : 0);
47		excerpt.style.maxHeight = maxHeight + 'px';
48	}
49
50	function fitAll() {
51		document.querySelectorAll(selector).forEach(fitExcerpt);
52	}
53
54	let resizeTimer = 0;
55	function requestFit() {
56		window.clearTimeout(resizeTimer);
57		resizeTimer = window.setTimeout(fitAll, 50);
58	}
59
60	if (document.readyState === 'loading') {
61		document.addEventListener('DOMContentLoaded', fitAll);
62	} else {
63		fitAll();
64	}
65
66	window.addEventListener('load', fitAll);
67	window.addEventListener('resize', requestFit);
68})();