https://www.kotoura-kankou.com/wp/wp-content/themes/kotourakankou/common/js/footerFixed.js

1/*--------------------------------------------------------------------------*
2 *  
3 *  footerFixed.js
4 *  
5 *  MIT-style license. 
6 *  
7 *  2007 Kazuma Nishihata [to-R]
8 *  http://blog.webcreativepark.net
9 *  
10 *--------------------------------------------------------------------------*/
11
12new function(){
13	
14	var footerId = "footer";
15	var headerId = "header";
16	//ƒƒCƒ“
17	function footerFixed(){
18		//ƒhƒLƒ…ƒƒ“ƒg‚̍‚‚³
19		var dh = document.getElementsByTagName("body")[0].clientHeight;
20		//ƒtƒbƒ^[‚Ìtop‚©‚ç‚̈ʒu
21		document.getElementById(footerId).style.top = "0px";
22		var ft = document.getElementById(footerId).offsetTop;
23		//ƒtƒbƒ^[‚̍‚‚³
24		var fh = document.getElementById(footerId).offsetHeight;
25		var hh = document.getElementById(headerId).offsetHeight;
26		//ƒEƒBƒ“ƒhƒE‚̍‚‚³
27		if (window.innerHeight){
28			var wh = window.innerHeight;
29		}else if(document.documentElement && document.documentElement.clientHeight != 0){
30			var wh = document.documentElement.clientHeight;
31		}
32		if(ft+fh+hh<wh){
33			document.getElementById(footerId).style.position = "relative";
34			document.getElementById(footerId).style.top = (wh-fh-ft-hh)+"px";
35		}
36	}
37	
38	//•¶ŽšƒTƒCƒY
39	function checkFontSize(func){
40	
41		//”»’è—v‘f‚̒ljÁ	
42		var e = document.createElement("div");
43		var s = document.createTextNode("S");
44		e.appendChild(s);
45		e.style.visibility="hidden"
46		e.style.position="absolute"
47		e.style.top="0"
48		document.body.appendChild(e);
49		var defHeight = e.offsetHeight;
50		
51		//”»’èŠÖ”
52		function checkBoxSize(){
53			if(defHeight != e.offsetHeight){
54				func();
55				defHeight= e.offsetHeight;
56			}
57		}
58		setInterval(checkBoxSize,1000)
59	}
60	
61	//ƒCƒxƒ“ƒgƒŠƒXƒi[
62	function addEvent(elm,listener,fn){
63		try{
64			elm.addEventListener(listener,fn,false);
65		}catch(e){
66			elm.attachEvent("on"+listener,fn);
67		}
68	}
69
70	addEvent(window,"load",footerFixed);
71	addEvent(window,"load",function(){
72		checkFontSize(footerFixed);
73	});
74	addEvent(window,"resize",footerFixed);
75	
76}